Subtract 90/12 from 15/4
1st number: 3 3/4, 2nd number: 7 6/12
15/4 - 90/12 is -15/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
15/4 = 15 × 3/4 × 3 = 45/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
90/12 = 90 × 1/12 × 1 = 90/12 - Subtract the two like fractions:
45/12 - 90/12 = 45 - 90/12 = -45/12 - After reducing the fraction, the answer is -15/4
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