Subtract 15/8 from 45/84
1st number: 45/84, 2nd number: 1 7/8
45/84 - 15/8 is -75/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
45/84 = 45 × 2/84 × 2 = 90/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
15/8 = 15 × 21/8 × 21 = 315/168 - Subtract the two like fractions:
90/168 - 315/168 = 90 - 315/168 = -225/168 - After reducing the fraction, the answer is -75/56
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