3a-a=60

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Solution for 3a-a=60 equation: 



3a-a=60

We move all terms to the left:

3a-a-(60)=0

We add all the numbers together, and all the variables

2a-60=0

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

2a=60

a=60/2

a=30

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