20.5=4.3+a

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Solution for 20.5=4.3+a equation: 



20.5=4.3+a

We move all terms to the left:

20.5-(4.3+a)=0

We add all the numbers together, and all the variables

-(a+4.3)+20.5=0

We get rid of parentheses

-a-4.3+20.5=0

We add all the numbers together, and all the variables

-1a+16.2=0

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

-a=-16.2

a=-16.2/-1

a=16+0.2/1

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