78+x=3x-40

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Solution for 78+x=3x-40 equation: 



78+x=3x-40

We move all terms to the left:

78+x-(3x-40)=0

We get rid of parentheses

x-3x+40+78=0

We add all the numbers together, and all the variables

-2x+118=0

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

-2x=-118

x=-118/-2

x=+59

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