5n+12=2n+9

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Solution for 5n+12=2n+9 equation: 



5n+12=2n+9

We move all terms to the left:

5n+12-(2n+9)=0

We get rid of parentheses

5n-2n-9+12=0

We add all the numbers together, and all the variables

3n+3=0

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

3n=-3

n=-3/3

n=-1

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