Subtract 30/42 from 35/21
1st number: 1 14/21, 2nd number: 30/42
35/21 - 30/42 is 20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
35/21 = 35 × 2/21 × 2 = 70/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42 - Subtract the two like fractions:
70/42 - 30/42 = 70 - 30/42 = 40/42 - After reducing the fraction, the answer is 20/21
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