Compare 81/63 and 90/70
1st number: 1 18/63, 2nd number: 1 20/70
81/63 is equivalent to 90/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
81/63 = 81 × 10/63 × 10 = 810/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
90/70 = 90 × 9/70 × 9 = 810/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 810/630 = 810/630 or 81/63 = 90/70
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