What is -1.7 repeating as a fraction?

Answer 1

-1.7 repeating as a fraction = -16/9

a1= 0.7

a2 = 0.07

r = a2/a1 = 0.07/0.7 = 0.1

fraction:

= -(1 + a1/1-r)

= -(1 + 0.7/1- 0.1)

= -(1 + 0.7/0.9) * (10/10)

= -(1 + 7/9)

= -(9 + 7)/9

= -16/9