Subtract 30/10 from 42/15
1st number: 2 12/15, 2nd number: 3 0/10
42/15 - 30/10 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
30/10 = 30 × 3/10 × 3 = 90/30 - Subtract the two like fractions:
84/30 - 90/30 = 84 - 90/30 = -6/30 - After reducing the fraction, the answer is -1/5
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