Subtract 20/9 from 42/7
1st number: 6 0/7, 2nd number: 2 2/9
42/7 - 20/9 is 34/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
42/7 = 42 × 9/7 × 9 = 378/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
20/9 = 20 × 7/9 × 7 = 140/63 - Subtract the two like fractions:
378/63 - 140/63 = 378 - 140/63 = 238/63 - After reducing the fraction, the answer is 34/9
- In mixed form: 37/9
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