Subtract 7/15 from 45/40
1st number: 1 5/40, 2nd number: 7/15
45/40 - 7/15 is 79/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
45/40 = 45 × 3/40 × 3 = 135/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
7/15 = 7 × 8/15 × 8 = 56/120 - Subtract the two like fractions:
135/120 - 56/120 = 135 - 56/120 = 79/120
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