Subtract 42/21 from 80/5
1st number: 16 0/5, 2nd number: 2 0/21
80/5 - 42/21 is 14/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
80/5 = 80 × 21/5 × 21 = 1680/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
42/21 = 42 × 5/21 × 5 = 210/105 - Subtract the two like fractions:
1680/105 - 210/105 = 1680 - 210/105 = 1470/105 - After reducing the fraction, the answer is 14/1
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