3x+-21=2x+15

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Solution for 3x+-21=2x+15 equation: 



3x+-21=2x+15

We move all terms to the left:

3x+-21-(2x+15)=0

We add all the numbers together, and all the variables

3x-(2x+15)=0

We get rid of parentheses

3x-2x-15=0

We add all the numbers together, and all the variables

x-15=0

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

x=15

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