Subtract 21/16 from 18/56
1st number: 18/56, 2nd number: 1 5/16
18/56 - 21/16 is -111/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 56 × 2 = 112,
18/56 = 18 × 2/56 × 2 = 36/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
21/16 = 21 × 7/16 × 7 = 147/112 - Subtract the two like fractions:
36/112 - 147/112 = 36 - 147/112 = -111/112
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