Subtract 21/16 from 42/60
1st number: 42/60, 2nd number: 1 5/16
42/60 - 21/16 is -49/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
42/60 = 42 × 4/60 × 4 = 168/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
21/16 = 21 × 15/16 × 15 = 315/240 - Subtract the two like fractions:
168/240 - 315/240 = 168 - 315/240 = -147/240 - After reducing the fraction, the answer is -49/80
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