Subtract 70/90 from 81/12
1st number: 6 9/12, 2nd number: 70/90
81/12 - 70/90 is 215/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 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 90 × 2 = 180,
70/90 = 70 × 2/90 × 2 = 140/180 - Subtract the two like fractions:
1215/180 - 140/180 = 1215 - 140/180 = 1075/180 - After reducing the fraction, the answer is 215/36
- In mixed form: 535/36
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