x+2x=5-8

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Solution for x+2x=5-8 equation: 



x+2x=5-8

We move all terms to the left:

x+2x-(5-8)=0

We add all the numbers together, and all the variables

x+2x-(-3)=0

We add all the numbers together, and all the variables

3x+3=0

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

3x=-3

x=-3/3

x=-1

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