Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

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Algebra: Inverse operations for addition and multiplication, reciprocals

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Question 50993: I really couldn't find a catagory for my pre- Algebra problem sorry.
Well here is my problem x-21=-2. Thank you for your time:)
x=-2+21
x=19
Click here to see answer by Niku(6)

Question 52378: hey sher, when u have digits inside the absolute value symbols, u take the distance those numbers are from zero....4 is 4 away & -3 is 3 away from 0. it's always gonna be postive. so u just add 4 & 3 and get 7 :D
| 4 | + |-3|
Thank you,
Sher
Click here to see answer by Niku(6)

Question 52918: How would u get -6+2x=9-3x ???
***ANY HELP WOULD BE GREATLY APPRECiATED***
Click here to see answer by smartness(7)

Question 52912This question is from textbook new york math a/b

: {{-7pq(2q+8p)}}This question is from textbook new york math a/b

Click here to see answer by funmath(2873)

Question 53168This question is from textbook Mathematics Course 2
: 1/5 x 10= bThis question is from textbook Mathematics Course 2

Click here to see answer by checkley71(8405)

Question 53166This question is from textbook Mathmatics Course 2
: 3 times 1 2/5=pThis question is from textbook Mathmatics Course 2

Click here to see answer by checkley71(8405)

Question 53164This question is from textbook Mathematics Course 2
: a/13=2This question is from textbook Mathematics Course 2

Click here to see answer by checkley71(8405)

Question 53405: what is the inverse function of
*e= refers to the number
y= 1+ e^x / 1- e^x
Click here to see answer by venugopalramana(3286)

Question 54199: I do not know how to solve this problem

f(x)= 11x-9 g(x)= x+11 over 9

verify the inverse functions
Click here to see answer by Earlsdon(4900)

Question 54212: Solve and check.
4/x = 5/7
Click here to see answer by funmath(2873)

Question 54450: what is the easierest way to study math or pre algebra?

Click here to see answer by funmath(2873)

Question 54770: why is algebra so hard
Click here to see answer by checkley71(8405)

Question 16967: 3(12)+(-42)
__________
(-1)^3+7
Click here to see answer by ayan(1)

Question 55499: Desribe how multiplication and division are inverse operations? Give an example?
Click here to see answer by stanbon(26297)

Question 55555: x+152=28
Click here to see answer by tutorcecilia(2042)

Question 55569: 142=x-38
Click here to see answer by tutorcecilia(2042)

Question 55570: 760=8n
Click here to see answer by tutorcecilia(2042)

Question 55580: 5x=40
Click here to see answer by Genius(17)

Question 55577: b-37=-61
Click here to see answer by Genius(17)

Question 55575: 142=k-38
Click here to see answer by Genius(17)

Question 55573: r+30=-214
Click here to see answer by Genius(17)

Question 55572: 306=m+198
Click here to see answer by Genius(17)

Question 50284This question is from textbook Elementary and Intermediate Algebra

: I need help with simplifiying the algebraic expression by combining similar terms.
(y+3)-(y-2)-(y+6)-7(y-1)This question is from textbook Elementary and Intermediate Algebra

Click here to see answer by BGluvsmath(64)

Question 11344: Please explain how to write each product as a sum or difference
the problems are (5+c)7 and 6(m-4) Thanks...
Click here to see answer by BGluvsmath(64)

Question 9071: please help me solve this equation:when the sum of 3.0 and 5.0 is subtracted from the product of 3.0 and 5.0,what is the diffrence?
Click here to see answer by BGluvsmath(64)

Question 6099: Divide.
1) -15xy - 10x
-----------
5x
2) 2x2y - 6xy2 + 12xy
------------------
2zy

Click here to see answer by BGluvsmath(64)

Question 57943: Hello - I am working on math superstars for fifth graders. The problem follows:
students arrived for school in groups. Bill was the first to arrive - consider him the first group. Each group that arrived after Bill had two more people than the group that arrived before it. How many people were in school after 20 groups arrived?
I worked this out by hand, and got the number 400, however, my parents say there is a formula I can use to make this much easier. They cannot remember it, though.
Any help that you can provide me is appreciated.
Thank you and have a good day.
Cassidy
Click here to see answer by stanbon(26297)

Question 58145This question is from textbook Mathematics Concepts and skills
: 3y-12=18 2x+11=19 -z+7=-3 Could you help me with these problems? Thank You!!!!This question is from textbook Mathematics Concepts and skills

Click here to see answer by tutorcecilia(2042)

Question 59893: 3x-(7x-5)=15
Click here to see answer by checkley71(8405)

Question 60156: Can someone help me?
The problem is:
Use the properties of addition and multiplication to complete the statement:
(14 + 8) + 11 = 14 + (______ + 11)
Thanks,
Ashley
Click here to see answer by funmath(2873)

Question 60712This question is from textbook
: What would a x value, that is undefined, be for the equation y=2/(1-2x)?This question is from textbook

Click here to see answer by funmath(2873)

Question 61758: add: -6+12+(-5)+3
Click here to see answer by tutorcecilia(2042)

Question 62621: Find the missing number 129,60,63,52,27,n,75,193,67 mean=77
Click here to see answer by stanbon(26297)

Question 63477: can you help me find the inverse of the function g(x)= (2x+5)/(x-2)
Click here to see answer by stanbon(26297)

Question 63476: can you help me find the inverse of the function g(x)= x/(x+2)
Click here to see answer by Edwin McCravy(2922)

Question 63475: can you help me find the inverse of the function g(x)= 1/(2x)
Click here to see answer by stanbon(26297)

Question 63473: can you help me find the inverse of the function g(x)= 4/(x-3)
Click here to see answer by 303795(562)

Question 63471: Can you please help me find the inverse of I would really appretiate your help
Click here to see answer by sarahschober(35)

Question 63837: I don't understand what to do in problems like 3+3x4=6+k please HELP ME!
Click here to see answer by stanbon(26297)

Question 63874: So i need help to figureing out how to do the problem 4(9-7)=c-37+15
MY teacher said to try this problem and show all your work don't say i did it in my head or i will get 0 for credit

Click here to see answer by checkley71(8405)

Question 63868: find the value of 70x + 84 when x is 65
Click here to see answer by checkley71(8405)

Question 64029: 2z+x=11.5

Click here to see answer by Edwin McCravy(2922)

Question 64028: x+y+z=8.25
Click here to see answer by stanbon(26297)

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