13=a/7-4

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Solution for 13=a/7-4 equation: 



13=a/7-4

We move all terms to the left:

13-(a/7-4)=0

We get rid of parentheses

-a/7+4+13=0

We multiply all the terms by the denominator


-a+4*7+13*7=0

We add all the numbers together, and all the variables

-1a+119=0

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

-a=-119

a=-119/-1

a=+119

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