n+4(2n+3)=21

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Solution for n+4(2n+3)=21 equation: 



n+4(2n+3)=21

We move all terms to the left:

n+4(2n+3)-(21)=0

We multiply parentheses

n+8n+12-21=0

We add all the numbers together, and all the variables

9n-9=0

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

9n=9

n=9/9

n=1

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