Subtract 54/21 from 45/28
1st number: 1 17/28, 2nd number: 2 12/21
45/28 - 54/21 is -27/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
54/21 = 54 × 4/21 × 4 = 216/84 - Subtract the two like fractions:
135/84 - 216/84 = 135 - 216/84 = -81/84 - After reducing the fraction, the answer is -27/28
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