Subtract 20/84 from 42/9
1st number: 4 6/9, 2nd number: 20/84
42/9 - 20/84 is 31/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
42/9 = 42 × 28/9 × 28 = 1176/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
20/84 = 20 × 3/84 × 3 = 60/252 - Subtract the two like fractions:
1176/252 - 60/252 = 1176 - 60/252 = 1116/252 - After reducing the fraction, the answer is 31/7
- In mixed form: 43/7
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