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(3-8x)+12=54
We move all terms to the left:
(3-8x)+12-(54)=0
We add all the numbers together, and all the variables
(-8x+3)+12-54=0
We add all the numbers together, and all the variables
(-8x+3)-42=0
We get rid of parentheses
-8x+3-42=0
We add all the numbers together, and all the variables
-8x-39=0
We move all terms containing x to the left, all other terms to the right
-8x=39
x=39/-8
x=-4+7/8
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