0.5*x+x=30

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Solution for 0.5*x+x=30 equation: 



0.5*x+x=30

We move all terms to the left:

0.5*x+x-(30)=0

We add all the numbers together, and all the variables

1.5x-30=0

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

1.5x=30

x=30/1.5

x=20

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