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10x-(2x-19)=-3(15-4x)
We move all terms to the left:
10x-(2x-19)-(-3(15-4x))=0
We add all the numbers together, and all the variables
10x-(2x-19)-(-3(-4x+15))=0
We get rid of parentheses
10x-2x-(-3(-4x+15))+19=0
We calculate terms in parentheses: -(-3(-4x+15)), so:We add all the numbers together, and all the variables
-3(-4x+15)
We multiply parentheses
12x-45
Back to the equation:
-(12x-45)
8x-(12x-45)+19=0
We get rid of parentheses
8x-12x+45+19=0
We add all the numbers together, and all the variables
-4x+64=0
We move all terms containing x to the left, all other terms to the right
-4x=-64
x=-64/-4
x=+16
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