Question

Solve the equation for a.

K = 4a + 9ab

1. a = K(4 + 9b)
2. a = 4(K + 9b)
3. a = 4+9b/K
4. a = K/ 4+9b

Answer 1

https://www.wolframalpha.com/input/?i=K+%3D+4a+%2B+9ab

Answer 2

a=0

Answer 3

choices are :
1. a = K(4 + 9b)
2. a = 4(K + 9b)
3. a = 4+9b/K
4. a = K/ 4+9b

Answer 4

@nandabo_

step 1:

take "a" common....

K = 4a + 9ab
k = a(4+9b)


step 2:

leave "a" alone now.... so by doing so just divide this equation with (4+9b)


a = k/(4+9b)...... and that is your required....