2a-20.4+a+1.6=180

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Solution for 2a-20.4+a+1.6=180 equation: 



2a-20.4+a+1.6=180

We move all terms to the left:

2a-20.4+a+1.6-(180)=0

We add all the numbers together, and all the variables

3a-198.8=0

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

3a=198.8

a=198.8/3

a=66+0.80000000000001/3

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