3a+4=85

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Solution for 3a+4=85 equation: 



3a+4=85

We move all terms to the left:

3a+4-(85)=0

We add all the numbers together, and all the variables

3a-81=0

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

3a=81

a=81/3

a=27

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