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68=3(6x-1)-7(1-3x)
We move all terms to the left:
68-(3(6x-1)-7(1-3x))=0
We add all the numbers together, and all the variables
-(3(6x-1)-7(-3x+1))+68=0
We calculate terms in parentheses: -(3(6x-1)-7(-3x+1)), so:We get rid of parentheses
3(6x-1)-7(-3x+1)
We multiply parentheses
18x+21x-3-7
We add all the numbers together, and all the variables
39x-10
Back to the equation:
-(39x-10)
-39x+10+68=0
We add all the numbers together, and all the variables
-39x+78=0
We move all terms containing x to the left, all other terms to the right
-39x=-78
x=-78/-39
x=+2
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