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143=13(2x+1)
We move all terms to the left:
143-(13(2x+1))=0
We calculate terms in parentheses: -(13(2x+1)), so:We get rid of parentheses
13(2x+1)
We multiply parentheses
26x+13
Back to the equation:
-(26x+13)
-26x-13+143=0
We add all the numbers together, and all the variables
-26x+130=0
We move all terms containing x to the left, all other terms to the right
-26x=-130
x=-130/-26
x=+5
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