Subtract 45/15 from 18/80
1st number: 18/80, 2nd number: 3 0/15
18/80 - 45/15 is -111/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
18/80 = 18 × 3/80 × 3 = 54/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
45/15 = 45 × 16/15 × 16 = 720/240 - Subtract the two like fractions:
54/240 - 720/240 = 54 - 720/240 = -666/240 - After reducing the fraction, the answer is -111/40
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