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5x+30=2(7x+6)
We move all terms to the left:
5x+30-(2(7x+6))=0
We calculate terms in parentheses: -(2(7x+6)), so:We get rid of parentheses
2(7x+6)
We multiply parentheses
14x+12
Back to the equation:
-(14x+12)
5x-14x-12+30=0
We add all the numbers together, and all the variables
-9x+18=0
We move all terms containing x to the left, all other terms to the right
-9x=-18
x=-18/-9
x=+2
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