(x+78)+2x=18

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Solution for (x+78)+2x=18 equation: 



(x+78)+2x=18

We move all terms to the left:

(x+78)+2x-(18)=0

We add all the numbers together, and all the variables

2x+(x+78)-18=0

We get rid of parentheses

2x+x+78-18=0

We add all the numbers together, and all the variables

3x+60=0

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

3x=-60

x=-60/3

x=-20

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