Subtract 70/9 from 81/16
1st number: 5 1/16, 2nd number: 7 7/9
81/16 - 70/9 is -391/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 9 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
81/16 = 81 × 9/16 × 9 = 729/144 - Likewise, for the 2nd fraction, since 9 × 16 = 144,
70/9 = 70 × 16/9 × 16 = 1120/144 - Subtract the two like fractions:
729/144 - 1120/144 = 729 - 1120/144 = -391/144
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