x+2x+x=19

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Solution for x+2x+x=19 equation: 



x+2x+x=19

We move all terms to the left:

x+2x+x-(19)=0

We add all the numbers together, and all the variables

4x-19=0

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

4x=19

x=19/4

x=4+3/4

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