0.2a+0.6+0.7a-0.2=3.1

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Solution for 0.2a+0.6+0.7a-0.2=3.1 equation: 



0.2a+0.6+0.7a-0.2=3.1

We move all terms to the left:

0.2a+0.6+0.7a-0.2-(3.1)=0

We add all the numbers together, and all the variables

0.9a-2.7=0

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

0.9a=2.7

a=2.7/0.9

a=3

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