Subtract 40/5 from 42/15
1st number: 2 12/15, 2nd number: 8 0/5
42/15 - 40/5 is -26/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
42/15 = 42 × 1/15 × 1 = 42/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
40/5 = 40 × 3/5 × 3 = 120/15 - Subtract the two like fractions:
42/15 - 120/15 = 42 - 120/15 = -78/15 - After reducing the fraction, the answer is -26/5
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