Subtract 21/16 from 42/5
1st number: 8 2/5, 2nd number: 1 5/16
42/5 - 21/16 is 567/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
42/5 = 42 × 16/5 × 16 = 672/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Subtract the two like fractions:
672/80 - 105/80 = 672 - 105/80 = 567/80 - In mixed form: 77/80
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