Compare 42/56 and 84/90
42/56 is smaller than 84/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
42/56 = 42 × 45/56 × 45 = 1890/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
84/90 = 84 × 28/90 × 28 = 2352/2520 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1890/2520 < 2352/2520 or 42/56 < 84/90
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Related: 84/56 and 84/90