x+x+0.5x=30.

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Solution for x+x+0.5x=30. equation: 



x+x+0.5x=30.

We move all terms to the left:

x+x+0.5x-(30.)=0

We add all the numbers together, and all the variables

x+x+0.5x-30=0

We add all the numbers together, and all the variables

2.5x-30=0

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

2.5x=30

x=30/2.5

x=12

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