3M+7=2n-1

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Solution for 3M+7=2n-1 equation: 



3+7=2M-1

We move all terms to the left:

3+7-(2M-1)=0

We add all the numbers together, and all the variables

-(2M-1)+10=0

We get rid of parentheses

-2M+1+10=0

We add all the numbers together, and all the variables

-2M+11=0

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

-2M=-11

M=-11/-2

M=5+1/2

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