Question

express the following as rational number having a common Dominator 4/5, 11/12, 21/20 and 31/40​

Answer 1

Hello mate!

Here's your answer

L.C.M of denominators 5,12,20and 40 = 120

Now,

☆ 4×24/5×24 = 96/120

☆ 11×10/12×10 = 110/120

☆ 21×6/20×6 = 126/120

☆ 31×3/40×3 = 93/120

Final answer

96/120, 110/120, 126/120, 93/120

Hope this helps you ✌

Answer 2

4/5 × 25/25 = 100/120

21/20 × 6/6 = 126/120

11/12 × 10/10 = 110/120

31/40 × 3/3 = 93/120