Subtract 18/7 from 81/9
1st number: 9 0/9, 2nd number: 2 4/7
81/9 - 18/7 is 45/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
81/9 = 81 × 7/9 × 7 = 567/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
18/7 = 18 × 9/7 × 9 = 162/63 - Subtract the two like fractions:
567/63 - 162/63 = 567 - 162/63 = 405/63 - After reducing the fraction, the answer is 45/7
- In mixed form: 63/7
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