4a+2a=72

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Solution for 4a+2a=72 equation: 



4a+2a=72

We move all terms to the left:

4a+2a-(72)=0

We add all the numbers together, and all the variables

6a-72=0

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

6a=72

a=72/6

a=12

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