6/42 in simplest form :Divide both the nominator and the denominator by the HCF (highest common factor) : 66/42 = 6:6/42:6 = 1/7
Answer:
45 100
/ \ / \
3 × 15 2×50
3× 5 2×25
/ \
5×5
45 : 3×3×5
100: 2×2×5×5
common : 3×5
15
HCF: 15
