2a-20.8=a-3.5

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Solution for 2a-20.8=a-3.5 equation: 



2a-20.8=a-3.5

We move all terms to the left:

2a-20.8-(a-3.5)=0

We get rid of parentheses

2a-a+3.5-20.8=0

We add all the numbers together, and all the variables

a-17.3=0

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

a=17.3

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