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20=5(4+2x)
We move all terms to the left:
20-(5(4+2x))=0
We add all the numbers together, and all the variables
-(5(2x+4))+20=0
We calculate terms in parentheses: -(5(2x+4)), so:We get rid of parentheses
5(2x+4)
We multiply parentheses
10x+20
Back to the equation:
-(10x+20)
-10x-20+20=0
We add all the numbers together, and all the variables
-10x=0
x=0/-10
x=0
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