2x+75=12-x

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Solution for 2x+75=12-x equation: 



2x+75=12-x

We move all terms to the left:

2x+75-(12-x)=0

We add all the numbers together, and all the variables

2x-(-1x+12)+75=0

We get rid of parentheses

2x+1x-12+75=0

We add all the numbers together, and all the variables

3x+63=0

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

3x=-63

x=-63/3

x=-21

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