4-5=9a+7

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Solution for 4-5=9a+7 equation: 



4-5=9a+7

We move all terms to the left:

4-5-(9a+7)=0

We add all the numbers together, and all the variables

-(9a+7)-1=0

We get rid of parentheses

-9a-7-1=0

We add all the numbers together, and all the variables

-9a-8=0

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

-9a=8

a=8/-9

a=-8/9

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