-12+15=-3(x+7)

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Solution for -12+15=-3(x+7) equation:



-12+15=-3(x+7)
We move all terms to the left:
-12+15-(-3(x+7))=0
We add all the numbers together, and all the variables
-(-3(x+7))+3=0
We calculate terms in parentheses: -(-3(x+7)), so:
-3(x+7)
We multiply parentheses
-3x-21
Back to the equation:
-(-3x-21)
We get rid of parentheses
3x+21+3=0
We add all the numbers together, and all the variables
3x+24=0
We move all terms containing x to the left, all other terms to the right
3x=-24
x=-24/3
x=-8

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