17-4=16-a

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Solution for 17-4=16-a equation: 



17-4=16-a

We move all terms to the left:

17-4-(16-a)=0

We add all the numbers together, and all the variables

-(-1a+16)+17-4=0

We add all the numbers together, and all the variables

-(-1a+16)+13=0

We get rid of parentheses

1a-16+13=0

We add all the numbers together, and all the variables

a-3=0

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

a=3

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