Question

Solve the equation for a.

K = 4a + 9ab

Answer 1

a=K9b+4

Answer 2

a=k/9b+4

Answer 3

k=4a+9ab

Flip the equation.
9ab+4a=k

Factor out variable a.
a(9b+4)=k

Divide both sides by 9b+4.
\[\frac{a(9b+4) }{ 9b+4 } = \frac{ k}{ 9b+4}\]


Answer
\[a = \frac{ k }{ 9b+4 }\]