80=45-a

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Solution for 80=45-a equation: 



80=45-a

We move all terms to the left:

80-(45-a)=0

We add all the numbers together, and all the variables

-(-1a+45)+80=0

We get rid of parentheses

1a-45+80=0

We add all the numbers together, and all the variables

a+35=0

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

a=-35

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