Subtract 90/75 from 45/40
1st number: 1 5/40, 2nd number: 1 15/75
45/40 - 90/75 is -3/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
45/40 = 45 × 15/40 × 15 = 675/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
90/75 = 90 × 8/75 × 8 = 720/600 - Subtract the two like fractions:
675/600 - 720/600 = 675 - 720/600 = -45/600 - After reducing the fraction, the answer is -3/40
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