-4=-13+18/a

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Solution for -4=-13+18/a equation: 



-4=-13+18/a

We move all terms to the left:

-4-(-13+18/a)=0



Domain of the equation: a)!=0

a!=0/1

a!=0

a∈R



We add all the numbers together, and all the variables

-(18/a-13)-4=0

We get rid of parentheses

-18/a+13-4=0

We multiply all the terms by the denominator


13*a-4*a-18=0

We add all the numbers together, and all the variables

9a-18=0

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

9a=18

a=18/9

a=2

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