Subtract 90/28 from 2/42
1st number: 2/42, 2nd number: 3 6/28
2/42 - 90/28 is -19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
2/42 = 2 × 2/42 × 2 = 4/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
90/28 = 90 × 3/28 × 3 = 270/84 - Subtract the two like fractions:
4/84 - 270/84 = 4 - 270/84 = -266/84 - After reducing the fraction, the answer is -19/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42-90/28 2/84-90/28 2/42-90/56 6/42-90/28 2/42-90/84 10/42-90/28 14/42-90/28