Compare 90/98 and 70/81
90/98 is greater than 70/81
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 98 × 81 = 7938,
90/98 = 90 × 81/98 × 81 = 7290/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
70/81 = 70 × 98/81 × 98 = 6860/7938 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 7290/7938 > 6860/7938 or 90/98 > 70/81
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