MAth help?

Question

Update : Solve the equation for a. 
1/a - 1/b = p 
Multiply both sides by ab...Idk what too do next :/ How do u get the answer? 
Thank you!!!: )

 

Answer 1

The equation 1/a - 1/b = p

Add 1/b to each side.

1/a = p + 1/b

1/a = (pb + 1)/b

Cross multiplication.

a(pb + 1) = b

Divide each side by (pb + 1).

Solution a = b/(pb + 1)