Subtract 45/84 from 45/42
1st number: 1 3/42, 2nd number: 45/84
45/42 - 45/84 is 15/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Subtract the two like fractions:
90/84 - 45/84 = 90 - 45/84 = 45/84 - After reducing the fraction, the answer is 15/28
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