4=a/7-9

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Solution for 4=a/7-9 equation: 



4=a/7-9

We move all terms to the left:

4-(a/7-9)=0

We get rid of parentheses

-a/7+9+4=0

We multiply all the terms by the denominator


-a+9*7+4*7=0

We add all the numbers together, and all the variables

-1a+91=0

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

-a=-91

a=-91/-1

a=+91

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