10-a=12.4

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Solution for 10-a=12.4 equation: 



10-a=12.4

We move all terms to the left:

10-a-(12.4)=0

We add all the numbers together, and all the variables

-1a-2.4=0

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

-a=2.4

a=2.4/-1

a=-2+0.4/1

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