-40=4(x-100)

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Solution for -40=4(x-100) equation:



-40=4(x-100)
We move all terms to the left:
-40-(4(x-100))=0
We calculate terms in parentheses: -(4(x-100)), so:
4(x-100)
We multiply parentheses
4x-400
Back to the equation:
-(4x-400)
We get rid of parentheses
-4x+400-40=0
We add all the numbers together, and all the variables
-4x+360=0
We move all terms containing x to the left, all other terms to the right
-4x=-360
x=-360/-4
x=+90

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