3x+6x+-15x=-18

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Solution for 3x+6x+-15x=-18 equation: 



3x+6x+-15x=-18

We move all terms to the left:

3x+6x+-15x-(-18)=0

We add all the numbers together, and all the variables

-6x+18=0

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

-6x=-18

x=-18/-6

x=+3

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