7(8-n)=21

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Solution for 7(8-n)=21 equation: 



7(8-n)=21

We move all terms to the left:

7(8-n)-(21)=0

We add all the numbers together, and all the variables

7(-1n+8)-21=0

We multiply parentheses

-7n+56-21=0

We add all the numbers together, and all the variables

-7n+35=0

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

-7n=-35

n=-35/-7

n=+5

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