3a-6=87

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Solution for 3a-6=87 equation: 



3a-6=87

We move all terms to the left:

3a-6-(87)=0

We add all the numbers together, and all the variables

3a-93=0

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

3a=93

a=93/3

a=31

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