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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