Subtract 45/42 from 10/84
1st number: 10/84, 2nd number: 1 3/42
10/84 - 45/42 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
10/84 = 10 × 1/84 × 1 = 10/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Subtract the two like fractions:
10/84 - 90/84 = 10 - 90/84 = -80/84 - After reducing the fraction, the answer is -20/21
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