Question

How to find the hcf and LCM of fractions like 4/3 and 6/7 and 5/4

Answer 1

■ FOR LCM:

Multiply the denominators: 3 x 7 x 4 = 21 x 4 = 84

Now... ( ......) / 84 ......... (1)

We know that 3 comes 28 times to get 84. So we will Multiply 4 by 28 which means: 112.

We know that 7 comes 12 times to get 84. So we will Multiply 6 by 12 which means: 72.

We know that in 5/4, 4 comes 21 times to get 84. So we will Multiply 5 by 21 which means: 105.

Now let's add all three received numbers by replacing their addition in eqn (1)

》 ( 112 + 72 + 105) / 84

》 289 / 84 is the answer


I hope this helps.