How can I change 9 2/11 and 1 7/15 into improper fractions?

Multiply whole number by denominator and add numerator. Put this number as numerator with original denominator.

For example: 9 2/11 would be 9*11 which is 99 add that to 2, which gives you 101. SO final answer is 101/11.
1 7/15= (15*1) + 7=22 SO 22/15