4.2=a+3

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Solution for 4.2=a+3 equation: 



4.2=a+3

We move all terms to the left:

4.2-(a+3)=0

We get rid of parentheses

-a-3+4.2=0

We add all the numbers together, and all the variables

-1a+1.2=0

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

-a=-1.2

a=-1.2/-1

a=1+0.2/1

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