Subtract 21/36 from 50/70
50/70 - 21/36 is 11/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
50/70 = 50 × 18/70 × 18 = 900/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
21/36 = 21 × 35/36 × 35 = 735/1260 - Subtract the two like fractions:
900/1260 - 735/1260 = 900 - 735/1260 = 165/1260 - After reducing the fraction, the answer is 11/84
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