Subtract 21/60 from 28/35
28/35 - 21/60 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
28/35 = 28 × 12/35 × 12 = 336/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
21/60 = 21 × 7/60 × 7 = 147/420 - Subtract the two like fractions:
336/420 - 147/420 = 336 - 147/420 = 189/420 - After reducing the fraction, the answer is 9/20
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