Subtract 30/5 from 20/84
1st number: 20/84, 2nd number: 6 0/5
20/84 - 30/5 is -121/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
30/5 = 30 × 84/5 × 84 = 2520/420 - Subtract the two like fractions:
100/420 - 2520/420 = 100 - 2520/420 = -2420/420 - After reducing the fraction, the answer is -121/21
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