3x+4x=2x-15

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Solution for 3x+4x=2x-15 equation: 



3x+4x=2x-15

We move all terms to the left:

3x+4x-(2x-15)=0

We add all the numbers together, and all the variables

7x-(2x-15)=0

We get rid of parentheses

7x-2x+15=0

We add all the numbers together, and all the variables

5x+15=0

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

5x=-15

x=-15/5

x=-3

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