12a+9a-6a=13

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Solution for 12a+9a-6a=13 equation:



12a+9a-6a=13
We move all terms to the left:
12a+9a-6a-(13)=0
We add all the numbers together, and all the variables
15a-13=0
We move all terms containing a to the left, all other terms to the right
15a=13
a=13/15
a=13/15

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