Subtract 45/25 from 63/80
1st number: 63/80, 2nd number: 1 20/25
63/80 - 45/25 is -81/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 25 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 80 × 5 = 400,
63/80 = 63 × 5/80 × 5 = 315/400 - Likewise, for the 2nd fraction, since 25 × 16 = 400,
45/25 = 45 × 16/25 × 16 = 720/400 - Subtract the two like fractions:
315/400 - 720/400 = 315 - 720/400 = -405/400 - After reducing the fraction, the answer is -81/80
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