(45-7a)=89

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Solution for (45-7a)=89 equation: 



(45-7a)=89

We move all terms to the left:

(45-7a)-(89)=0

We add all the numbers together, and all the variables

(-7a+45)-89=0

We get rid of parentheses

-7a+45-89=0

We add all the numbers together, and all the variables

-7a-44=0

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

-7a=44

a=44/-7

a=-6+2/7

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