Subtract 15/54 from 90/12
1st number: 7 6/12, 2nd number: 15/54
90/12 - 15/54 is 65/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 54 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
90/12 = 90 × 9/12 × 9 = 810/108 - Likewise, for the 2nd fraction, since 54 × 2 = 108,
15/54 = 15 × 2/54 × 2 = 30/108 - Subtract the two like fractions:
810/108 - 30/108 = 810 - 30/108 = 780/108 - After reducing the fraction, the answer is 65/9
- In mixed form: 72/9
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