Question

Find the HCF of 9/10,12/25,18/35,21/40?​

Answer 1

H.C.F of fractions=

L.C.Mofdenominator

H.C.Fofnumerator

=

L.C.M(10,25,35,40)

H.C.F(9,12,18,21)

Factors of 9=3×3

Factors of 12=3×2×2

Factors of 18=3×3×2

Factors of 21=3×7

Common factor=3

∴ H.C.F=3

Factors of 10=5×2

Factors of 25=5×5

Factors of 35=5×7

Factors of 40=5×2×2×2

L.C.M=1400

H.C.F=

1400

3