Subtract 90/20 from 50/84
1st number: 50/84, 2nd number: 4 10/20
50/84 - 90/20 is -82/21.
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,
50/84 = 50 × 5/84 × 5 = 250/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Subtract the two like fractions:
250/420 - 1890/420 = 250 - 1890/420 = -1640/420 - After reducing the fraction, the answer is -82/21
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