Subtract 2/42 from 84/40
1st number: 2 4/40, 2nd number: 2/42
84/40 - 2/42 is 431/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
84/40 = 84 × 21/40 × 21 = 1764/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
2/42 = 2 × 20/42 × 20 = 40/840 - Subtract the two like fractions:
1764/840 - 40/840 = 1764 - 40/840 = 1724/840 - After reducing the fraction, the answer is 431/210
- In mixed form: 211/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-4/42 84/80-2/42 84/40-2/84 84/40-6/42 84/40-10/42 84/40-14/42