Subtract 49/42 from 90/5
1st number: 18 0/5, 2nd number: 1 7/42
90/5 - 49/42 is 101/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
90/5 = 90 × 42/5 × 42 = 3780/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
49/42 = 49 × 5/42 × 5 = 245/210 - Subtract the two like fractions:
3780/210 - 245/210 = 3780 - 245/210 = 3535/210 - After reducing the fraction, the answer is 101/6
- In mixed form: 165/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-98/42 90/10-49/42 90/5-49/84 90/15-49/42 90/25-49/42 90/35-49/42