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130=-5(2-4x)
We move all terms to the left:
130-(-5(2-4x))=0
We add all the numbers together, and all the variables
-(-5(-4x+2))+130=0
We calculate terms in parentheses: -(-5(-4x+2)), so:We get rid of parentheses
-5(-4x+2)
We multiply parentheses
20x-10
Back to the equation:
-(20x-10)
-20x+10+130=0
We add all the numbers together, and all the variables
-20x+140=0
We move all terms containing x to the left, all other terms to the right
-20x=-140
x=-140/-20
x=+7
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