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-83=4(x-7)+7x
We move all terms to the left:
-83-(4(x-7)+7x)=0
We calculate terms in parentheses: -(4(x-7)+7x), so:We get rid of parentheses
4(x-7)+7x
We add all the numbers together, and all the variables
7x+4(x-7)
We multiply parentheses
7x+4x-28
We add all the numbers together, and all the variables
11x-28
Back to the equation:
-(11x-28)
-11x+28-83=0
We add all the numbers together, and all the variables
-11x-55=0
We move all terms containing x to the left, all other terms to the right
-11x=55
x=55/-11
x=-5
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