Subtract 72/42 from 15/50
1st number: 15/50, 2nd number: 1 30/42
15/50 - 72/42 is -99/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
72/42 = 72 × 25/42 × 25 = 1800/1050 - Subtract the two like fractions:
315/1050 - 1800/1050 = 315 - 1800/1050 = -1485/1050 - After reducing the fraction, the answer is -99/70
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