Subtract 21/12 from 30/48
1st number: 30/48, 2nd number: 1 9/12
30/48 - 21/12 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 48 × 1 = 48,
30/48 = 30 × 1/48 × 1 = 30/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
21/12 = 21 × 4/12 × 4 = 84/48 - Subtract the two like fractions:
30/48 - 84/48 = 30 - 84/48 = -54/48 - After reducing the fraction, the answer is -9/8
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