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3(x+3)-4(-2+x)=19
We move all terms to the left:
3(x+3)-4(-2+x)-(19)=0
We add all the numbers together, and all the variables
3(x+3)-4(x-2)-19=0
We multiply parentheses
3x-4x+9+8-19=0
We add all the numbers together, and all the variables
-1x-2=0
We move all terms containing x to the left, all other terms to the right
-x=2
x=2/-1
x=-2
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