Subtract 72/7 from 21/16
1st number: 1 5/16, 2nd number: 10 2/7
21/16 - 72/7 is -1005/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 7 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 16 × 7 = 112,
21/16 = 21 × 7/16 × 7 = 147/112 - Likewise, for the 2nd fraction, since 7 × 16 = 112,
72/7 = 72 × 16/7 × 16 = 1152/112 - Subtract the two like fractions:
147/112 - 1152/112 = 147 - 1152/112 = -1005/112
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