Subtract 30/21 from 50/20
1st number: 2 10/20, 2nd number: 1 9/21
50/20 - 30/21 is 15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
50/20 = 50 × 21/20 × 21 = 1050/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
30/21 = 30 × 20/21 × 20 = 600/420 - Subtract the two like fractions:
1050/420 - 600/420 = 1050 - 600/420 = 450/420 - After reducing the fraction, the answer is 15/14
- In mixed form: 11/14
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