5x-21=x+3

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Solution for 5x-21=x+3 equation: 



5x-21=x+3

We move all terms to the left:

5x-21-(x+3)=0

We get rid of parentheses

5x-x-3-21=0

We add all the numbers together, and all the variables

4x-24=0

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

4x=24

x=24/4

x=6

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