Question

1/a+1/b=1/f

Answer 1

soo what is the question which value do u need

Answer 2

i dont need a value just to solve a

Answer 3

\[a=\frac{ f }{ b }-1\]

Answer 4

and the -1

Answer 5

what -1

Answer 6

how am i going to solve it? step by step?

Answer 7

ok

Answer 8

1/(a+1)=b x 1/f
1/(a+1)=b/f
(a+1)=f/b
a=f/b -1

Answer 9

thank you!

Answer 10

No problem