-21=-7(x-5)

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Solution for -21=-7(x-5) equation:



-21=-7(x-5)
We move all terms to the left:
-21-(-7(x-5))=0
We calculate terms in parentheses: -(-7(x-5)), so:
-7(x-5)
We multiply parentheses
-7x+35
Back to the equation:
-(-7x+35)
We get rid of parentheses
7x-35-21=0
We add all the numbers together, and all the variables
7x-56=0
We move all terms containing x to the left, all other terms to the right
7x=56
x=56/7
x=8

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