Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 13341: How do you find the distance between the points (9,5) and (2,6)?
Click here to see answer by smik(40)

Question 13341: How do you find the distance between the points (9,5) and (2,6)?
Click here to see answer by akmb1215(68)

Question 13354: Please help me solve this: 7r-(2r+8)=32
Click here to see answer by smik(40)

Question 13358: Please help me to solve: 10-3x=2x-8x+40
Click here to see answer by rapaljer(4667)

Question 13367: Please help me solve this: 5(2t-2)=30
Click here to see answer by elizabeth2005(20)

Question 13269: The problem 3xy(4+2xy)6xy (to third power)
I started within the () which would give me
6xy+4 then 6 to the 3rd is 222xy +4
Did I approach this problem correctly, If not how should I? Thank you Peter Droste grade9 pdroste@stny.rr.com
Click here to see answer by rapaljer(4667)

Question 13381: please help me solve this: 13-3(2x-1)=4 and if possible show me the check...thx, Sonya
Click here to see answer by akmb1215(68)

Question 13353:
Click here to see answer by akmb1215(68)

Question 13253: 1. Consider this fortunate incident. A girl was crossing a railroad bridge when, halfway across, she saw a train 50 metres away moving toward her. She immediately turned and ran so that the train missed her by the narrowest of margins. If she had tried to cross the bridge, the train would have struck her one metre before she could have reached the end. How long is the bridge?
Click here to see answer by khwang(438)

Question 13385: please help me solve this: 1/2 + 4m = 3m - 5/2 And if possible show the check.
Click here to see answer by hyh_123(8)

Question 13438: please help me solve: 2.1x + 45.2 = 3.2 - 8.4x and if possible show the check....thank you, Sonya
Click here to see answer by Earlsdon(6287)

Question 13469: Please help me solve this:
express x in terms of y
I need to see the working to understand.
Click here to see answer by askmemath(368)

Question 13555: could you please help me solve: 1.7t + 8 - 1.62t = 0.4t - 0.32 + 8 and show the check if possible....thanks so much....Sonya
Click here to see answer by rahman(247)

Question 13575: Solve for X
2x - (2x)/7 = x/2 + 17/2
Click here to see answer by ntnk(54)

Question 13575: Solve for X
2x - (2x)/7 = x/2 + 17/2
Click here to see answer by rahman(247)

Question 13612: I'm the 7th grader's tutor, with one more of the five that gave us problems.

Here's our work: then
We solved for x and got but it does not fit when you check it by plugging 10 in for x in the equasion.
Can you help us please? Thanks!
Click here to see answer by longjonsilver(2297)

Question 13571: please help me solve: 0.8 - 4(b-1) = 0.2 + 3(4-b) and show the check if possible
Click here to see answer by longjonsilver(2297)

Question 13613: thanks for your help on the previous problem... I'm trying to apply the rules you showed me. So... now I've got
I got as far as
I can't figure out the +/- rules for simplifying from here. I thought you keep whatever sign is directly in front of the number: +8x and -10 and -5x and +10
So now I'm stuck with x=10; but when I plug it in, I get which is not equal.
i really appreciate the help. thanks!
Click here to see answer by longjonsilver(2297)

Question 13617: I am trying to determine what the rule is when there is a - outside of the brakcets.
In one problem, I am multiplying by the LCD 15... and it's .
In another problem, I am multiplying by the LCD 20... and it's .
What is the rule? Why is it -15 but +10?? I am perplexed again, but if I can figure this out in words I think I'll be OK. Can you help?
Click here to see answer by rapaljer(4667)

Question 13724: Trying to help my daughter with her 8th grade Pre-Algebra, we're coming up with different answers and need help.
100/300=2/X
Click here to see answer by rahman(247)

Question 13721: n+13=-12
Click here to see answer by rahman(247)

Question 13739: Please help me solve the following problems and can you also show the check? pleeeeeeeeease...thx.
13-(2c+2)=2(c+2)+3c
0.7(3x+6)=1.1-(x+2)

Click here to see answer by rahman(247)

Question 13702: twnty more than a number is-12. find the number
didnt grasp u question
but if u r sying the number then the answer is -32 i think so plz clear it to me

Click here to see answer by baigshahib(11)

Question 13715: Can please anwser this equation. I tried and failed to get the correct anwser. 6w-125=1. i can not get what "w" equals. Thank you
Click here to see answer by longjonsilver(2297)

Question 13716: can you please help me with this equation. 5-4y+y-1=-23. Thank you sooo much!
Click here to see answer by LilSkittleMd(119)

Question 13690: 4x(y) + 2x(-5y)

Click here to see answer by LilSkittleMd(119)

Question 13059: i have a story problem
april buys eight books for 44 dollars ...paperback cost 4 dollars and hard back books cost 8 dollars how many of each type of book did she buy?
Click here to see answer by LilSkittleMd(119)

Question 13704: thirty-two more than a number is 75
Click here to see answer by elizabeth2005(20)

Question 13907: 6(x/2-4) = 21+6x
Click here to see answer by rahman(247)

Question 13896: 6x+5x=3x+2x-54
Click here to see answer by ginny(3)

Question 13909: Write a problem you could represent with 2x-10=6. Solve the equation and show your solution to the problem.
Click here to see answer by ginny(3)

Question 13961: 5x+1-3x9x+10-2x+4
Click here to see answer by longjonsilver(2297)

Question 13990: pls. help me how to solve this problems. 3a-10=4+a and b+3=2b-7. If you could pls. show me the equations because, i couldn't get the answer. thank you so much.
Click here to see answer by LilSkittleMd(119)

Question 14030:
16 = n - (-4) is this right?
16 = n + (-4)
16+ -4 = n
n =20
Click here to see answer by LilSkittleMd(119)

Question 14010: 4/x-1=3
Click here to see answer by LilSkittleMd(119)

Question 13674: Define a variable, write an equation, and solve.
One fifth of a number plus five times that number us equal to seven times the number less 18. Find the number.
Click here to see answer by LilSkittleMd(119)

Question 14073: how would i do 1/2k-3=2-3/4k?

Click here to see answer by rahman(247)

Question 14193: What Is The Value Of The Variable "X"? -------> 4"X" + 3 = -5
Click here to see answer by elima(1433)

Question 14194: I am trying to help my daughter with her homework and it has been a while since fractions.....I do know the basics but I am stumped and cannot explain this to her. 9/8=x/6 is the problem. Equals should have equal crossproducts, Right? That would mean that 9x6=54 and 8x x=54, x=6 3/4?
I don't understand enough to help her. Please help.
Thanks so much!
Click here to see answer by Alwayscheerful(414)

Question 14245: I don't understand how to solve equations. THe addition principal where you have to classify either as equivalent equations or equivalent expressions.
a-5= -3; a= 2
and
a-9+6a; 7a-9
Click here to see answer by rahman(247)

Question 14298: (1y)2+14=-2
Click here to see answer by elizabeth2005(20)

Question 13903: Find all positive integer values of x and y that satisfy the equation 1 over x+x over y+1 over xy=1.
Click here to see answer by khwang(438)

Question 14394: "In the equation 3a+1=-17.What does the a stand for
Click here to see answer by elima(1433)

Question 14382: systms of linear equations an problem solving the substituition method
3s-4t=14
5s+t=8
Click here to see answer by elima(1433)

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