Subtract 21/50 from 42/30
1st number: 1 12/30, 2nd number: 21/50
42/30 - 21/50 is 49/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
42/30 = 42 × 5/30 × 5 = 210/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
21/50 = 21 × 3/50 × 3 = 63/150 - Subtract the two like fractions:
210/150 - 63/150 = 210 - 63/150 = 147/150 - After reducing the fraction, the answer is 49/50
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