2n+21=4n+33

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Solution for 2n+21=4n+33 equation: 



2n+21=4n+33

We move all terms to the left:

2n+21-(4n+33)=0

We get rid of parentheses

2n-4n-33+21=0

We add all the numbers together, and all the variables

-2n-12=0

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

-2n=12

n=12/-2

n=-6

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