work out the following questions

Answer:
a)8/21
b)1/9
Step-by-step explanation:
because when we divide fraction we resprocal the divisor
Answer:
A= 8/21 B= 1/9
Step-by-step explanation:
A= 2x4 7x3
Just multiply straight across:)
B= 5x1 > 9x5 = 1/9
Hope this helps!