Question

K = 4a + 9ab solve for a

Answer 1

`a=(K)/(4+9b)`

Explanation:

`K=4a+9ab`

Switch sides:

`4a+9ab=K`

Factor out a:

`a\left(4+9b\right)=K`

Divide both sides by:
`(4+9b)`

`(a\left(4+9b\right))/(4+9b)=(K)/(4+9b)`

`a=(K)/(4+9b)`