Subtract 21/16 from 70/9
1st number: 7 7/9, 2nd number: 1 5/16
70/9 - 21/16 is 931/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 9 × 16 = 144,
70/9 = 70 × 16/9 × 16 = 1120/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Subtract the two like fractions:
1120/144 - 189/144 = 1120 - 189/144 = 931/144 - In mixed form: 667/144
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