2a-20.3+a-3.5+a+1.7=18.5

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Solution for 2a-20.3+a-3.5+a+1.7=18.5 equation: 



2a-20.3+a-3.5+a+1.7=18.5

We move all terms to the left:

2a-20.3+a-3.5+a+1.7-(18.5)=0

We add all the numbers together, and all the variables

4a-40.6=0

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

4a=40.6

a=40.6/4

a=10+0.6/4

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