Subtract 28/35 from 21/36
21/36 - 28/35 is -13/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 35 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
21/36 = 21 × 35/36 × 35 = 735/1260 - Likewise, for the 2nd fraction, since 35 × 36 = 1260,
28/35 = 28 × 36/35 × 36 = 1008/1260 - Subtract the two like fractions:
735/1260 - 1008/1260 = 735 - 1008/1260 = -273/1260 - After reducing the fraction, the answer is -13/60
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