3x+x=2x-7

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Solution for 3x+x=2x-7 equation: 



3x+x=2x-7

We move all terms to the left:

3x+x-(2x-7)=0

We add all the numbers together, and all the variables

4x-(2x-7)=0

We get rid of parentheses

4x-2x+7=0

We add all the numbers together, and all the variables

2x+7=0

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

2x=-7

x=-7/2

x=-3+1/2

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