SOLUTION: -12-x=8-3x +x=8+x -12=8-2x -12=8-2x -8 -8 ___________ -20= -2x -20/-2x X= 10

Algebra ->  Linear-equations -> SOLUTION: -12-x=8-3x +x=8+x -12=8-2x -12=8-2x -8 -8 ___________ -20= -2x -20/-2x X= 10      Log On


   

Question 916895: -12-x=8-3x
+x=8+x
-12=8-2x
-12=8-2x
-8 -8
___________
-20= -2x
-20/-2x
X= 10
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Are you trying to solve for x?

-12-x=8-3x
-12-x%2B3x-8=8-3x%2B3x-8x
-20-4x=0
-4x-20%2B20=20
-4x=20
x=-%281%2F4%29%2820%29
highlight%28x=-5%29

Just simply using inverse operations and some commutative property of "addition". Addition and multplication properties of equality govern every step, other than some included commutativity properties.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

-12-x=8-3x
+x=8+x
-12=8-2x
-12=8-2x
-8 -8
___________
-20= -2x
-20/-2x
X= 10
highlight_green%28x+=+10%29

You are correct!! Good job!!