Question

Find the HCF & LCM of 2/5 3/12 4/7
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Answer 1

Step-by-step explanation:

2/7 , 3/14 , 5/3. = ( 12 , 9 , 70 )/42.

or, 12/42 , 9/42 , 70/42 .

L.C.M of 12/42 , 9/42 , 70/42 = ( L.C.M. of 12 , 9 , 70 )/42. ,

12 = 2×2×3.

9 =3×3.

70= 2×5×7.

L.C.M of 12, 9 , 70 = 2×3×5×7×3×2 = 1260.

Thus , L.C.M. of 2/7 , 3/14 , 5/3 = 1260/42 = 30. , Answer.

H.C.F. of 12/42 , 9/42 , 70/42 = (H.C.F. of 12 , 9 , 42 )/42 = 1/42. , Answer.