Compare 12/64 and 18/90
12/64 is smaller than 18/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 90 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
12/64 = 12 × 45/64 × 45 = 540/2880 - Likewise, for the 2nd fraction, since 90 × 32 = 2880,
18/90 = 18 × 32/90 × 32 = 576/2880 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 540/2880 < 576/2880 or 12/64 < 18/90
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