.8a+15=20

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Solution for .8a+15=20 equation: 



.8a+15=20

We move all terms to the left:

.8a+15-(20)=0

We add all the numbers together, and all the variables

.8a-5=0

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

.8a=5

a=5/.8

a=6+0.2/.8

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