Subtract 28/12 from 30/84
1st number: 30/84, 2nd number: 2 4/12
30/84 - 28/12 is -83/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Subtract the two like fractions:
30/84 - 196/84 = 30 - 196/84 = -166/84 - After reducing the fraction, the answer is -83/42
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