84=4(5-2x)

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Solution for 84=4(5-2x) equation:



84=4(5-2x)
We move all terms to the left:
84-(4(5-2x))=0
We add all the numbers together, and all the variables
-(4(-2x+5))+84=0
We calculate terms in parentheses: -(4(-2x+5)), so:
4(-2x+5)
We multiply parentheses
-8x+20
Back to the equation:
-(-8x+20)
We get rid of parentheses
8x-20+84=0
We add all the numbers together, and all the variables
8x+64=0
We move all terms containing x to the left, all other terms to the right
8x=-64
x=-64/8
x=-8

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