Subtract 45/40 from 42/14
1st number: 3 0/14, 2nd number: 1 5/40
42/14 - 45/40 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
42/14 = 42 × 20/14 × 20 = 840/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Subtract the two like fractions:
840/280 - 315/280 = 840 - 315/280 = 525/280 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
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