6a+7a=75

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Solution for 6a+7a=75 equation: 



6a+7a=75

We move all terms to the left:

6a+7a-(75)=0

We add all the numbers together, and all the variables

13a-75=0

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

13a=75

a=75/13

a=5+10/13

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