Subtract 18/40 from 28/15
1st number: 1 13/15, 2nd number: 18/40
28/15 - 18/40 is 17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Subtract the two like fractions:
224/120 - 54/120 = 224 - 54/120 = 170/120 - After reducing the fraction, the answer is 17/12
- In mixed form: 15/12
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