Question

17. What should be added to 80/11 to get 65/7 *
155/77
150/77
125/77
18. Reduce the following in simplest form- 225/275
11/9
9/11
none of these​

Answer 1

Answer:

c is the correct answer

Answer 2

$\frac{80}{11} + x = \frac{65}{7} \\ \\ x = \frac{65}{7} - \frac{80}{11} \\ \\ x = \frac{(715 -560 )}{77} \\ \\ \underline{ x = \frac{155}{77} \: \: \: \: } \\ \\ \\ simplest \: form \: \\ \\ \frac{225}{275} = \frac{45}{55} = \frac{9}{11}$