7(5-m)=21

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



7(5-m)=21

We move all terms to the left:

7(5-m)-(21)=0

We add all the numbers together, and all the variables

7(-1m+5)-21=0

We multiply parentheses

-7m+35-21=0

We add all the numbers together, and all the variables

-7m+14=0

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

-7m=-14

m=-14/-7

m=+2

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