8+9a=71-9

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Solution for 8+9a=71-9 equation: 



8+9a=71-9

We move all terms to the left:

8+9a-(71-9)=0

We add all the numbers together, and all the variables

9a+8-62=0

We add all the numbers together, and all the variables

9a-54=0

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

9a=54

a=54/9

a=6

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