12.5+2x=30

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Solution for 12.5+2x=30 equation: 



12.5+2x=30

We move all terms to the left:

12.5+2x-(30)=0

We add all the numbers together, and all the variables

2x-17.5=0

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

2x=17.5

x=17.5/2

x=8+1/1.3333333333333

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