Answer:
a. 17 1/2
b. 16 1/5
Step-by-step explanation:
a.
convert mixed numbers to fractions
5/1 2/7
5 x 7 / 1 x 2
= 35/2 and simplify
b.
9/1 5/9
9 x 9 / 1 x 5
= 81/5
[tex]5 \div \dfrac 27 = 5 \times \left(\dfrac 27 \right)^{-1} = 5 \times \dfrac 72 = \dfrac{35}2\\\\\\9\div \dfrac 59 = 9 \times \left(\dfrac 59 \right)^{-1} = 9 \times \dfrac 95 = \dfrac{81}5[/tex]
