Subtract 30/45 from 81/12
1st number: 6 9/12, 2nd number: 30/45
81/12 - 30/45 is 73/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
81/12 = 81 × 15/12 × 15 = 1215/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
30/45 = 30 × 4/45 × 4 = 120/180 - Subtract the two like fractions:
1215/180 - 120/180 = 1215 - 120/180 = 1095/180 - After reducing the fraction, the answer is 73/12
- In mixed form: 61/12
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