SOLUTION: -4/9(2x-4)=48 -10=1/2x+x 55x-3(9x+12)=-64 9x-5(3x-12)=30 Trying to help my son with these equations and I am stumped! Thanks AL

Algebra ->  Linear-equations -> SOLUTION: -4/9(2x-4)=48 -10=1/2x+x 55x-3(9x+12)=-64 9x-5(3x-12)=30 Trying to help my son with these equations and I am stumped! Thanks AL      Log On


   

Question 160894This question is from textbook Algebra 1
: -4/9(2x-4)=48
-10=1/2x+x
55x-3(9x+12)=-64
9x-5(3x-12)=30
Trying to help my son with these equations and I am stumped!
Thanks AL This question is from textbook Algebra 1

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
we parents have to stick together...

-4/9(2x-4)=48 __ multiplying by -9/4 __ 2x-4=-126 __ adding 4 __ 2x=-122 __ dividing by 2 __ x=-61

-10=1/2x+x __ -10=3/2 x __ multiplying by 2/3 __ -20/3=x

55x-3(9x+12)=-64 __ distributing -3 __ 55x-27x-36=-64 __ adding 36 __ 28x=28 __ x=1

9x-5(3x-12)=30 __ distributing -5 __ 9x-15x+60=30 __ subtracting 60 __ -6x=-30 __ dividing by -6 __ x=5