Subtract 40/84 from 21/5
1st number: 4 1/5, 2nd number: 40/84
21/5 - 40/84 is 391/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
21/5 = 21 × 84/5 × 84 = 1764/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
40/84 = 40 × 5/84 × 5 = 200/420 - Subtract the two like fractions:
1764/420 - 200/420 = 1764 - 200/420 = 1564/420 - After reducing the fraction, the answer is 391/105
- In mixed form: 376/105
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