Subtract 30/20 from 10/84
1st number: 10/84, 2nd number: 1 10/20
10/84 - 30/20 is -29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
30/20 = 30 × 21/20 × 21 = 630/420 - Subtract the two like fractions:
50/420 - 630/420 = 50 - 630/420 = -580/420 - After reducing the fraction, the answer is -29/21
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