Question

http://media01.owotw.com/o_alg02_2011/5/406.gif

Answer 1

i need help

Answer 2

solve for y

Answer 3

-2/5
-9/80
-3.5 i think a

Answer 4

1) Wite down \[y \ne 0\]2) Multiply everything by y.
3) Multiply everything by 7
4) Multiply everything by 3
5) Multiply everything by 2

There are other ways to proceed. This is just one with what I hope is an obviuos goal.

Answer 5

lets simplify the left side first
factor in the 3 and get 3y+ 21
so you have

(3y + 21 / 7y) -(4y -7/6)
find common denominator
so it will be like this

[6(3y+21) - 7y(4y -7) ] / 7y
simplifying
[18y + 126 - 28y^2 + 49 ] / 7y
[ -28y^2 + 18y + 175 ]/7y

now lets simplify right side
multiply in the 2
14y -2 / 21
find common denominator
[21(7y+10) - 3y(14y - 2)] / 63y
simplify
[147y + 120 - 42y^2 + 6y] / 63y
[-42y^2 + 153y + 120 ] / 63y

now your equation looks like this:
[-28y^2 + 18y + 175]/7y = [-42y^2 + 153y + 120]/63y

cross multiply
63y[-28y^2 + 18y + 175] = 7y [-42y^2 + 153y + 120]
cancel out 7y on both sides
9[-28y^2 + 18y + 175] = -42y^2 + 153y + 120
multiply in 9
-252y^2 + 162y + 1575 = -42y^2 + 153y + 120
simplify
-210y^2 - 9y + 1455 = 0
factor using quadrictic formula should give you your answer

Answer 6

is -2/5

Answer 7

is correct my answer

Answer 8

sorry i might of made a mistake in that math
but the process of doing it is correct

Answer 9

@RadEn

Answer 10

@robtobey

Answer 11

wolfram told me the answer is -2/5 :)
u are correct
http://www.wolframalpha.com/input/?i=%283%28y%2B7%29%2F7y%29-%28%284y-7%29%2F6%29%3D%28%287y%2B10%29%2F3y%29-%282%287y-1%29%2F21%29&dataset=