Subtract 15/30 from 42/2
1st number: 21 0/2, 2nd number: 15/30
42/2 - 15/30 is 41/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
42/2 = 42 × 15/2 × 15 = 630/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Subtract the two like fractions:
630/30 - 15/30 = 630 - 15/30 = 615/30 - After reducing the fraction, the answer is 41/2
- In mixed form: 201/2
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