SOLUTION: how do you solve this? -1/4(-32x=40y) & this 3(x+4y)+(-4)(8x-y)

Algebra ->  Expressions-with-variables -> SOLUTION: how do you solve this? -1/4(-32x=40y) & this 3(x+4y)+(-4)(8x-y)      Log On


   

Question 7821: how do you solve this?
-1/4(-32x=40y)
& this
3(x+4y)+(-4)(8x-y)
Answer by bonster(299) About Me  (Show Source):
You can put this solution on YOUR website!

-1%2F4(-32x=40y)
8x=40y
(8x)%281%2F8%29=(40y)%281%2F8%29
x=5y

x=5y
%281%2F5%29x=5y%281%2F5%29
x%2F5=y


3(x+4y)+(-4)(8x-y)
=(3)(x)+(3)(4y)+(-4)(8x)+(-4)(-y)
=3x+12y-32x+4y
=-29x+16y