Answer:

1) -14/5 or -2⅘

2) 1/(-5)

3) 17/33

Step-by-step explanation:

1) 18/25÷(-9/35)

reciproc the 2nd fraction

18/25×(-35/9)

simplify the fraction

= -14/5 or 2⅘

2) 11/10÷(-11/2)

resiproc the 2nd fraction

11/10×(-2/11)

simplify the fraction

= 1/-5

3) 17/9÷11/3

reciproc the 2nd fraction

17/9×3/11

simplify the fraction

= 17/33

hope this helps you