(m-21-)=4

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Solution for (m-21-)=4 equation:



(m-21-)=4
We move all terms to the left:
(m-21-)-(4)=0
We add all the numbers together, and all the variables
(+m)-4=0
We get rid of parentheses
m-4=0
We move all terms containing m to the left, all other terms to the right
m=4

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