Question

the value of (8^-1-9^-1)^-1÷(4^-1 - 9^-1)^-1 is???

Answer 1

{(8^-1) - (9^-1)}^-1 ÷ {(4^-1) - (9^-1)}^-1
(1/8 -19)^-1 ÷ (1/4-1/9)^-1
(9/72-8/72)^-1 ÷ (9/36-4/36)
(1/72)^-1 ÷ (5/36)^-1
72 ÷(36/5)
72×5/36
360/36
=10

Answer 2

Here's your answer. Hope you got it, have a good day ahead!!