3n+21=2n+19

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Solution for 3n+21=2n+19 equation: 



3n+21=2n+19

We move all terms to the left:

3n+21-(2n+19)=0

We get rid of parentheses

3n-2n-19+21=0

We add all the numbers together, and all the variables

n+2=0

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

n=-2

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