SOLUTION: please explain. -4(2x-3)=8x+5

Algebra ->  Expressions -> SOLUTION: please explain. -4(2x-3)=8x+5      Log On


   

Question 112630: please explain.

-4(2x-3)=8x+5
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
-4(2x-3)=8x+5
-8x+12=8x+5 work on parentheses 1st. Minus times a plus is a minus. Minus times a minus is a plus.
-8x+8x+12=8x+8x+5
12=16x+5
12-5=16x+5-5
7=16x
16x/16=7/16
x=7/16
Always check:
-4(2*7/16 -3)=8*7/16 +5
-8*7/16 +12=56/16 +5
-56/16 +12=7/2+5
-7/2+12=8 1/2 true
Ed