Subtract 21/80 from 4/60
4/60 - 21/80 is -47/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
4/60 = 4 × 4/60 × 4 = 16/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Subtract the two like fractions:
16/240 - 63/240 = 16 - 63/240 = -47/240
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