Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

Tutors Answer Your Questions about Expressions-with-variables (FREE)

Question 13920: a=h/n a = batting average, h= hits ,n=number times at bat.
How would i solve equation for h?
If I had a batting average of .265 and i bat 200 times how many hits does the batter have ?
Click here to see answer by LilSkittleMd(119)

Question 13967: I don't know about you but these (.) confuse me would you help with this one please? }}
Thank you
Click here to see answer by longjonsilver(2297)

Question 13888: It says to solve the system of equations using the substitution method.

I think I'm supposed to see what X and Y are equal to, but I keep getting some pretty messed up answers.
Click here to see answer by LilSkittleMd(119)

Question 14009: "What is the answer to 2m+12=3m-31"
Click here to see answer by LilSkittleMd(119)

Question 13209: 3x to the 2 power plus 7 subtract 8 plus 4x to the power 2
Click here to see answer by LilSkittleMd(119)

Question 14063: 1/4(y+8)=5
Click here to see answer by rahman(247)

Question 14111: -25d+10=15d
Click here to see answer by rahman(247)

Question 14098: 1) v=r+at, solve for a
2) y=mx+b, solve for m
3) I=prt, solve for r
4) by+2/3=c, solve for y
5) H= (0.24)I(I)Rt, solve for r
6) P= E(e)/r, solve for r
7) 4b-5=t, solve for b
8) km+5x=6y, solve for m
9) c=3/4y+b, solve for y
10) p(t+1)=-2, solve for t
11) 5x+y/a=2, solve for a
12) 3ax-n/5=-4, solve for x
Click here to see answer by rahman(247)

Question 14094: 3/5y+a=b, solve for y
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Question 14145: 8y-(2y-3)=9
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Question 14145: 8y-(2y-3)=9
Click here to see answer by elizabeth2005(20)

Question 14229: Ok i have this math problem but i dont understand how to find the answer the problem is: 11(4-6y)+5(13y+1)=9
Click here to see answer by elima(1433)

Question 14226: Which Statement is true if n is a whole number?
a. if 20/n=5, then n/5=4
b.if 20-n=5, then n/5=4
c.if 5 x n=20, then n+5=25
d.if 20/n=5, then 20/5+n
Click here to see answer by Alwayscheerful(414)

Question 14295: Hi the equation is a simultaneous equation. I worked it out and got it wrong so I did your help in finding the correct solution.
12f-6e=-2
7e-3f=6

so can u help me?
Click here to see answer by atif.muhammad(135)

Question 14339: Solve the equation 2a-b=ac+3b for a. Iknow the answer but can't figure steps to get there. Please help
Click here to see answer by Alwayscheerful(414)

Question 14338: Solve the equation 2a-b=ac+3b for a. Iknow the answer but can't figure steps to get there. Please help
Click here to see answer by Earlsdon(6287)

Question 14355: I need a fast and easy way to understand how to solve expressions with variables using subtiution, so could you please give me examples and if possible help me understand these types of problems better.
Click here to see answer by elima(1433)

Question 14515: The problem is 5x-2(4+3x)=11
the answer for "x" is supposed to be -19. but i cant figure out the "work" that is needed to be shown! Please HELP!!!!

Click here to see answer by elima(1433)

Question 14513: I can not figure out how to simplify: -(2x - 3y) + 3(3x + y)
Click here to see answer by elima(1433)

Question 14595: -5-(15y-1)=2(7y-16)-y
Click here to see answer by rahman(247)

Question 14595: -5-(15y-1)=2(7y-16)-y
Click here to see answer by Alwayscheerful(414)

Question 14597: This is the problem, I don't think I did it correctly. Where did I go wrong?
2(6d+3)=18-3(16-3d)
my solution:
12d+6-18-48+9d
3d+6=-30
3d=-24
d=-8
Click here to see answer by longjonsilver(2297)

Question 9785: what is the algebraic expression for the verbal expression six times a number
Click here to see answer by dolphingurl(4)

Question 9785: what is the algebraic expression for the verbal expression six times a number
Click here to see answer by kelseym(1)

Question 14699: Please help me solve this equation:
Click here to see answer by Drpengui(15)

Question 14719: (X+1)/7 - (X-3)/5 = 4/5
Click here to see answer by Drpengui(15)

Question 14698: Please help me solve this equation:
Click here to see answer by rahman(247)

Question 14723: I think the "= 0" is messing me up...
(x+6)(2x-1) = 0
I tried:
(1x+6)(2x-1) = 0
2x - 1x + 12x - 6 = 0
2x (squared) - 11x - 6 = 0
and now I'm stuck, I'm supposed to get 2 answers? Thanks.
Click here to see answer by Earlsdon(6287)

Question 14859: 7a-3=3-2a
This is what we came up with. Not coming out right.
7a-3+3=3-2a+3
7a=2a
Click here to see answer by jb007mi6(53)

Question 14845: Please help me solve this equation:
Click here to see answer by Alwayscheerful(414)

Question 14848: Please help me solve this equation:
So far, i have distributed the 3 to the 1+d. I basically figured the problem and got 3+d=3. i do not know where to go from there, or even if i have the problem right.please help me.
Click here to see answer by Alwayscheerful(414)

Question 14847: Please help me solve this equation:
(_= fraction bar)
Click here to see answer by Alwayscheerful(414)

Question 14844: Please help me solve this equation:
Click here to see answer by Alwayscheerful(414)

Question 14843: Please help me solve this equation:
(i don't know what the division symbol is)
Click here to see answer by Alwayscheerful(414)

Question 14826: How do you solve this equation? -2(x-4)=15
Click here to see answer by Alwayscheerful(414)

Question 14902: OK I DONT GET HOW TO DO IT...
2/3 * 1/3??...
Click here to see answer by elima(1433)

Question 14925: what is the answer -7+11g=9-5g
Click here to see answer by Drpengui(15)

Question 14927: Please help me solve this equation:
(The underscore ( _ ) is a fraction bar)
Click here to see answer by Drpengui(15)

Question 14927: Please help me solve this equation:
(The underscore ( _ ) is a fraction bar)
Click here to see answer by Alwayscheerful(414)

Question 14922: Please help me solve this equation:
Click here to see answer by Drpengui(15)

Question 14969: (4 1/2)(x) = 3 is the correct answer 2/3
Click here to see answer by jb007mi6(53)

Question 15023: (-6 + 2) / (2 + 2) how do i work it ?
Thank You
Click here to see answer by bonster(299)

Question 15114: I need help with four problems: I need to write a variable expression for each word phrase:
Problem 1: five less than y
Problem 2:the product of a number and 78
Problem 3:the quotient of a number and 9
Problem 4:ten increased by a number
Click here to see answer by jb007mi6(53)

Question 15111: -12q+4=8q-6
Click here to see answer by rahman(247)

Question 15181: what is the solution to 4z+6/3=? z=3
Click here to see answer by elima(1433)

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