12.45-2x=102.45

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Solution for 12.45-2x=102.45 equation: 



12.45-2x=102.45

We move all terms to the left:

12.45-2x-(102.45)=0

We add all the numbers together, and all the variables

-2x-90=0

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

-2x=90

x=90/-2

x=-45

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