Subtract 21/28 from 72/98
72/98 - 21/28 is -3/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 28 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
72/98 = 72 × 2/98 × 2 = 144/196 - Likewise, for the 2nd fraction, since 28 × 7 = 196,
21/28 = 21 × 7/28 × 7 = 147/196 - Subtract the two like fractions:
144/196 - 147/196 = 144 - 147/196 = -3/196
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