3x+21=2x+3

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Solution for 3x+21=2x+3 equation: 



3x+21=2x+3

We move all terms to the left:

3x+21-(2x+3)=0

We get rid of parentheses

3x-2x-3+21=0

We add all the numbers together, and all the variables

x+18=0

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

x=-18

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