-2.8a=4.2

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Solution for -2.8a=4.2 equation: 



-2.8a=4.2

We move all terms to the left:

-2.8a-(4.2)=0

We add all the numbers together, and all the variables

-2.8a-4.2=0

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

-2.8a=4.2

a=4.2/-2.8

a=-1+1/2

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