Subtract 18/80 from 42/2
1st number: 21 0/2, 2nd number: 18/80
42/2 - 18/80 is 831/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
42/2 = 42 × 40/2 × 40 = 1680/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Subtract the two like fractions:
1680/80 - 18/80 = 1680 - 18/80 = 1662/80 - After reducing the fraction, the answer is 831/40
- In mixed form: 2031/40
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