X+3x+x-2=78

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Solution for X+3x+x-2=78 equation: 



X+3X+X-2=78

We move all terms to the left:

X+3X+X-2-(78)=0

We add all the numbers together, and all the variables

5X-80=0

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

5X=80

X=80/5

X=16

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