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21-11=5(x-5)
We move all terms to the left:
21-11-(5(x-5))=0
We add all the numbers together, and all the variables
-(5(x-5))+10=0
We calculate terms in parentheses: -(5(x-5)), so:We get rid of parentheses
5(x-5)
We multiply parentheses
5x-25
Back to the equation:
-(5x-25)
-5x+25+10=0
We add all the numbers together, and all the variables
-5x+35=0
We move all terms containing x to the left, all other terms to the right
-5x=-35
x=-35/-5
x=+7
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