3x+18=39+-4x

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Solution for 3x+18=39+-4x equation: 



3x+18=39+-4x

We move all terms to the left:

3x+18-(39+-4x)=0

We add all the numbers together, and all the variables

3x-(-4x)+18=0

We get rid of parentheses

3x+4x+18=0

We add all the numbers together, and all the variables

7x+18=0

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

7x=-18

x=-18/7

x=-2+4/7

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