Subtract 81/16 from 42/10
1st number: 4 2/10, 2nd number: 5 1/16
42/10 - 81/16 is -69/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
42/10 = 42 × 8/10 × 8 = 336/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Subtract the two like fractions:
336/80 - 405/80 = 336 - 405/80 = -69/80
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