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7x+8-3x=2(x-15)
We move all terms to the left:
7x+8-3x-(2(x-15))=0
We add all the numbers together, and all the variables
4x-(2(x-15))+8=0
We calculate terms in parentheses: -(2(x-15)), so:We get rid of parentheses
2(x-15)
We multiply parentheses
2x-30
Back to the equation:
-(2x-30)
4x-2x+30+8=0
We add all the numbers together, and all the variables
2x+38=0
We move all terms containing x to the left, all other terms to the right
2x=-38
x=-38/2
x=-19
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