7a+5a=3

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Solution for 7a+5a=3 equation: 



7a+5a=3

We move all terms to the left:

7a+5a-(3)=0

We add all the numbers together, and all the variables

12a-3=0

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

12a=3

a=3/12

a=1/4

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