3x+28=-x

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Solution for 3x+28=-x equation: 



3x+28=-x

We move all terms to the left:

3x+28-(-x)=0

We add all the numbers together, and all the variables

3x-(-1x)+28=0

We get rid of parentheses

3x+1x+28=0

We add all the numbers together, and all the variables

4x+28=0

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

4x=-28

x=-28/4

x=-7

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