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14=2(20-x)
We move all terms to the left:
14-(2(20-x))=0
We add all the numbers together, and all the variables
-(2(-1x+20))+14=0
We calculate terms in parentheses: -(2(-1x+20)), so:We get rid of parentheses
2(-1x+20)
We multiply parentheses
-2x+40
Back to the equation:
-(-2x+40)
2x-40+14=0
We add all the numbers together, and all the variables
2x-26=0
We move all terms containing x to the left, all other terms to the right
2x=26
x=26/2
x=13
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