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196=7x+7(7x+12)
We move all terms to the left:
196-(7x+7(7x+12))=0
We calculate terms in parentheses: -(7x+7(7x+12)), so:We get rid of parentheses
7x+7(7x+12)
We multiply parentheses
7x+49x+84
We add all the numbers together, and all the variables
56x+84
Back to the equation:
-(56x+84)
-56x-84+196=0
We add all the numbers together, and all the variables
-56x+112=0
We move all terms containing x to the left, all other terms to the right
-56x=-112
x=-112/-56
x=+2
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