Subtract 3/42 from 21/16
1st number: 1 5/16, 2nd number: 3/42
21/16 - 3/42 is 139/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
3/42 = 3 × 8/42 × 8 = 24/336 - Subtract the two like fractions:
441/336 - 24/336 = 441 - 24/336 = 417/336 - After reducing the fraction, the answer is 139/112
- In mixed form: 127/112
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