12a+3a+4a-12=180

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Solution for 12a+3a+4a-12=180 equation: 



12a+3a+4a-12=180

We move all terms to the left:

12a+3a+4a-12-(180)=0

We add all the numbers together, and all the variables

19a-192=0

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

19a=192

a=192/19

a=10+2/19

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