Question

W=ab/a+b ; solve for a

Answer 1

I could solve for a and it said this:

Isolate the variable by dividing each side by factors that don't contain the variable.

All real numbers

Interval Notation:

(−∞,∞)

But I can solve for W and B

W = 2b

b = W/2

a = I could solve for a and they put the answer to this (−∞,∞)