x+-4x=-18

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Solution for x+-4x=-18 equation: 



x+-4x=-18

We move all terms to the left:

x+-4x-(-18)=0

We add all the numbers together, and all the variables

-3x+18=0

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

-3x=-18

x=-18/-3

x=+6

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