Compare 70/80 and 15/63, Which fraction is greater?

Compare 70/80 and 15/63

70/80 is greater than 15/63

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040

Next, find the equivalent fraction of both fractional numbers with denominator 5040
For the 1st fraction, since 80 × 63 = 5040,
70/80 = 70 × 63/80 × 63 = 4410/5040
Likewise, for the 2nd fraction, since 63 × 80 = 5040,
15/63 = 15 × 80/63 × 80 = 1200/5040
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
4410/5040 > 1200/5040 or 70/80 > 15/63

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