Subtract 90/6 from 6/42
1st number: 6/42, 2nd number: 15 0/6
6/42 - 90/6 is -104/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
6/42 = 6 × 1/42 × 1 = 6/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42 - Subtract the two like fractions:
6/42 - 630/42 = 6 - 630/42 = -624/42 - After reducing the fraction, the answer is -104/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-90/6 6/84-90/6 6/42-90/12 18/42-90/6 6/42-90/18 30/42-90/6 6/42-90/30 6/42-90/42