Subtract 21/45 from 81/6
1st number: 13 3/6, 2nd number: 21/45
81/6 - 21/45 is 391/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
81/6 = 81 × 15/6 × 15 = 1215/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
1215/90 - 42/90 = 1215 - 42/90 = 1173/90 - After reducing the fraction, the answer is 391/30
- In mixed form: 131/30
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