M8=7x+42

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Solution for M8=7x+42 equation: 



8=7M+42

We move all terms to the left:

8-(7M+42)=0

We get rid of parentheses

-7M-42+8=0

We add all the numbers together, and all the variables

-7M-34=0

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

-7M=34

M=34/-7

M=-4+6/7

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