5x-3=-x+21

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



5x-3=-x+21

We move all terms to the left:

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

We add all the numbers together, and all the variables

5x-(-1x+21)-3=0

We get rid of parentheses

5x+1x-21-3=0

We add all the numbers together, and all the variables

6x-24=0

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

6x=24

x=24/6

x=4

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