3x+15=-x+51

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Solution for 3x+15=-x+51 equation: 



3x+15=-x+51

We move all terms to the left:

3x+15-(-x+51)=0

We add all the numbers together, and all the variables

3x-(-1x+51)+15=0

We get rid of parentheses

3x+1x-51+15=0

We add all the numbers together, and all the variables

4x-36=0

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

4x=36

x=36/4

x=9

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