Subtract 18/12 from 45/84
1st number: 45/84, 2nd number: 1 6/12
45/84 - 18/12 is -27/28.
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,
45/84 = 45 × 1/84 × 1 = 45/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
18/12 = 18 × 7/12 × 7 = 126/84 - Subtract the two like fractions:
45/84 - 126/84 = 45 - 126/84 = -81/84 - After reducing the fraction, the answer is -27/28
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