Question

Divide - 81 by the sum of and 3/9 and -6/7​

Answer 1

Sum of 3/9 and -6/7

= 3/9+(-6/7)

= 3×7-6×9/63

= 21-54/63

= -33/63

= -11/21

divide -81/-11/21

= -81×21/-11

= 1701/11

Answer 2

Answer:

FIRST WE NEED TO ADD 3/9 AND -6/7

⇒3/9+(-6/7)

⇒3/9-6/7

⇒(3x7/9x7)- (6x9/7x9)

⇒21/63-54/63

⇒-33/63

⇒-11/21

NOW WE NEED TO DIVIDE IT BY -81

⇒-81×21/-11

⇒ 1701/11