Subtract 15/50 from 21/49
21/49 - 15/50 is 9/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 50 is 2450
Next, find the equivalent fraction of both fractional numbers with denominator 2450 - For the 1st fraction, since 49 × 50 = 2450,
21/49 = 21 × 50/49 × 50 = 1050/2450 - Likewise, for the 2nd fraction, since 50 × 49 = 2450,
15/50 = 15 × 49/50 × 49 = 735/2450 - Subtract the two like fractions:
1050/2450 - 735/2450 = 1050 - 735/2450 = 315/2450 - After reducing the fraction, the answer is 9/70
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