10a+3a=65

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Solution for 10a+3a=65 equation: 



10a+3a=65

We move all terms to the left:

10a+3a-(65)=0

We add all the numbers together, and all the variables

13a-65=0

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

13a=65

a=65/13

a=5

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