4+91a=39a+20

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Solution for 4+91a=39a+20 equation: 



4+91a=39a+20

We move all terms to the left:

4+91a-(39a+20)=0

We get rid of parentheses

91a-39a-20+4=0

We add all the numbers together, and all the variables

52a-16=0

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

52a=16

a=16/52

a=4/13

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