Subtract 21/15 from 42/50
1st number: 42/50, 2nd number: 1 6/15
42/50 - 21/15 is -14/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 15 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
42/50 = 42 × 3/50 × 3 = 126/150 - Likewise, for the 2nd fraction, since 15 × 10 = 150,
21/15 = 21 × 10/15 × 10 = 210/150 - Subtract the two like fractions:
126/150 - 210/150 = 126 - 210/150 = -84/150 - After reducing the fraction, the answer is -14/25
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