10a-2a+4+a=85

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Solution for 10a-2a+4+a=85 equation: 



10a-2a+4+a=85

We move all terms to the left:

10a-2a+4+a-(85)=0

We add all the numbers together, and all the variables

9a-81=0

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

9a=81

a=81/9

a=9

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