Subtract 49/90 from 21/28
21/28 - 49/90 is 37/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
21/28 = 21 × 45/28 × 45 = 945/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
49/90 = 49 × 14/90 × 14 = 686/1260 - Subtract the two like fractions:
945/1260 - 686/1260 = 945 - 686/1260 = 259/1260 - After reducing the fraction, the answer is 37/180
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