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40x=-50(x-2)
We move all terms to the left:
40x-(-50(x-2))=0
We calculate terms in parentheses: -(-50(x-2)), so:We get rid of parentheses
-50(x-2)
We multiply parentheses
-50x+100
Back to the equation:
-(-50x+100)
40x+50x-100=0
We add all the numbers together, and all the variables
90x-100=0
We move all terms containing x to the left, all other terms to the right
90x=100
x=100/90
x=1+1/9
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