2X+231=-2x-21

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Solution for 2X+231=-2x-21 equation: 



2X+231=-2X-21

We move all terms to the left:

2X+231-(-2X-21)=0

We get rid of parentheses

2X+2X+21+231=0

We add all the numbers together, and all the variables

4X+252=0

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

4X=-252

X=-252/4

X=-63

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