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7=3(4-x)
We move all terms to the left:
7-(3(4-x))=0
We add all the numbers together, and all the variables
-(3(-1x+4))+7=0
We calculate terms in parentheses: -(3(-1x+4)), so:We get rid of parentheses
3(-1x+4)
We multiply parentheses
-3x+12
Back to the equation:
-(-3x+12)
3x-12+7=0
We add all the numbers together, and all the variables
3x-5=0
We move all terms containing x to the left, all other terms to the right
3x=5
x=5/3
x=1+2/3
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