M-2=m-9

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Solution for M-2=m-9 equation: 



-2=M-9

We move all terms to the left:

-2-(M-9)=0

We get rid of parentheses

-M+9-2=0

We add all the numbers together, and all the variables

-1M+7=0

We move all terms containing M to the left, all other terms to the right

-M=-7

M=-7/-1

M=+7

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