5x+15=-21+2x

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Solution for 5x+15=-21+2x equation: 



5x+15=-21+2x

We move all terms to the left:

5x+15-(-21+2x)=0

We add all the numbers together, and all the variables

5x-(2x-21)+15=0

We get rid of parentheses

5x-2x+21+15=0

We add all the numbers together, and all the variables

3x+36=0

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

3x=-36

x=-36/3

x=-12

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