Subtract 63/42 from 30/28
1st number: 1 2/28, 2nd number: 1 21/42
30/28 - 63/42 is -3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84 - Subtract the two like fractions:
90/84 - 126/84 = 90 - 126/84 = -36/84 - After reducing the fraction, the answer is -3/7
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