3x+x-7=2x+9

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Solution for 3x+x-7=2x+9 equation: 



3x+x-7=2x+9

We move all terms to the left:

3x+x-7-(2x+9)=0

We add all the numbers together, and all the variables

4x-(2x+9)-7=0

We get rid of parentheses

4x-2x-9-7=0

We add all the numbers together, and all the variables

2x-16=0

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

2x=16

x=16/2

x=8

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