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50=7(1+7x)
We move all terms to the left:
50-(7(1+7x))=0
We add all the numbers together, and all the variables
-(7(7x+1))+50=0
We calculate terms in parentheses: -(7(7x+1)), so:We get rid of parentheses
7(7x+1)
We multiply parentheses
49x+7
Back to the equation:
-(49x+7)
-49x-7+50=0
We add all the numbers together, and all the variables
-49x+43=0
We move all terms containing x to the left, all other terms to the right
-49x=-43
x=-43/-49
x=43/49
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