help with dividing the following?

Question

42/3 by 7
41/5 by 12/5
2/3 by 3/5
7/12 by 2/3
31/2 by 3/4

Answer 1

It is a very easy game of multiplication:
42/3 by 7: 3 x 7 > 41 >42/21 = 2
41/5 by 12/5 > 41/5 x 5/12 = 205/60 = 3 5/12
2/3 by 3/5 > 2/3 x 5/3 = 10/9 = 1 1/9
etc.

Answer 2

To divide a fraction by another number, invert that number and multiply.42/3* 1/7=42/21=2
41/5*5/12=41/12=3 5/12
Do the rest yourself.