Subtract 90/48 from 21/12
1st number: 1 9/12, 2nd number: 1 42/48
21/12 - 90/48 is -1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 48 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
21/12 = 21 × 4/12 × 4 = 84/48 - Likewise, for the 2nd fraction, since 48 × 1 = 48,
90/48 = 90 × 1/48 × 1 = 90/48 - Subtract the two like fractions:
84/48 - 90/48 = 84 - 90/48 = -6/48 - After reducing the fraction, the answer is -1/8
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