Subtract 15/5 from 42/8
1st number: 5 2/8, 2nd number: 3 0/5
42/8 - 15/5 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
42/8 = 42 × 5/8 × 5 = 210/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
15/5 = 15 × 8/5 × 8 = 120/40 - Subtract the two like fractions:
210/40 - 120/40 = 210 - 120/40 = 90/40 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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