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4x-13=3(3x-1)
We move all terms to the left:
4x-13-(3(3x-1))=0
We calculate terms in parentheses: -(3(3x-1)), so:We get rid of parentheses
3(3x-1)
We multiply parentheses
9x-3
Back to the equation:
-(9x-3)
4x-9x+3-13=0
We add all the numbers together, and all the variables
-5x-10=0
We move all terms containing x to the left, all other terms to the right
-5x=10
x=10/-5
x=-2
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