Question

What is the missing number? (below are fractions)

9 ?
_ = _
21 105

A.) 5
B.) 45
C.) 89
D.) 93

Answer 1

45

option B

hope it helps

Answer 2

answer is B.)

Explanation:

9/21=×/105 cross multiply

21x=945 divide 21 by both sides

x=945/21

x=45