3x+21=2x+28

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Solution for 3x+21=2x+28 equation: 



3x+21=2x+28

We move all terms to the left:

3x+21-(2x+28)=0

We get rid of parentheses

3x-2x-28+21=0

We add all the numbers together, and all the variables

x-7=0

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

x=7

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