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NEED MATH HELP NOW! Please solve this algebra problem.?
My niece has asked me to help her solve this algebra problem--so help me, I can't do it! Need someone to do it ASAP, and include each step. THANK YOU!
(x + 6)/6 = 1 - (x + 2)/7
Thanks!
Sorry, 12/13ths isn't working. Any other ideas?
3 Answers
- Rev KevLv 51 decade agoFavorite Answer
You need to get rid of the fractions. You can do this by multiplying each side by a number that is a multiple of both 6 and 7. The least common multiple is 42, so let's use that.
42*[(x + 6)/6] = 42*[1 - (x + 2)/7]
7(x + 6) = 42 - 6(x + 2)
7x + 42 = 42 - 6x - 12
7x + 42 = 30 - 6x
Next, add 6x to each side and subtract 42 from each side. This puts all the x terms on one side and the numbers on the other.
6x + 7x + 42 - 42 = 30 - 6x + 6x - 42
13x = -12
Now divide by 13 to get x by itself.
13x/13 = -12/13
x = -12/13
Plug in that value to make sure you're correct.
- 1 decade ago
(x + 6)/6 = 1 - (x + 2)/7
(x + 6)/6 = [7 - x - 2]/7 <-- make the denominator the same
7(x + 6) = 6(7 - x - 2)
7x + 42 = 42 - 6x - 12
7x + 6x = 42 - 42 - 12
13x = -12
x = -12/13
I hope that helped =) And if I made a mistake, I'm so sorry!
- Anonymous5 years ago
(3x-5)/4 +x/2 = a million/3 {(3x-5)*2 + (x*4)}/8 = a million/3 (6x-10+4x)/8 = a million/3 10x - 10 = 8/3 10x= (8/3)+10 10x= 38/3 x= 38/30 x= 19/15 or a million.26 * refers to multiplication / refers to branch