Question

(8power-1 -9power-1) ÷(4power-1 -9 power-1)​

Answer 1

Answer:

51/13

plz mark brainliest

Step-by-step explanation:

8^-1 - 9^-1 = 1/8 - 1/9 = 9+8/72 = 17/72

4^-1 - 9^-1 = 1/4 - 1/9 = 9+4/36 = 13/36

17/72  /  13/36  =  17/72 x 36/13  =  36 and 72 get canceled. = 17/1 x 3/13.

= 17 x 3 / 13 = 51/13