Subtract 6/42 from 90/15
1st number: 6 0/15, 2nd number: 6/42
90/15 - 6/42 is 41/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
6/42 = 6 × 5/42 × 5 = 30/210 - Subtract the two like fractions:
1260/210 - 30/210 = 1260 - 30/210 = 1230/210 - After reducing the fraction, the answer is 41/7
- In mixed form: 56/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-12/42 90/30-6/42 90/15-6/84 90/15-18/42 90/45-6/42 90/15-30/42 90/75-6/42