Subtract 2/84 from 90/20
1st number: 4 10/20, 2nd number: 2/84
90/20 - 2/84 is 94/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
2/84 = 2 × 5/84 × 5 = 10/420 - Subtract the two like fractions:
1890/420 - 10/420 = 1890 - 10/420 = 1880/420 - After reducing the fraction, the answer is 94/21
- In mixed form: 410/21
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