12.5+x=-7.5

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Solution for 12.5+x=-7.5 equation: 



12.5+x=-7.5

We move all terms to the left:

12.5+x-(-7.5)=0

We add all the numbers together, and all the variables

x+20=0

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

x=-20

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