Subtract 50/21 from 90/6
1st number: 15 0/6, 2nd number: 2 8/21
90/6 - 50/21 is 265/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
90/6 = 90 × 7/6 × 7 = 630/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
50/21 = 50 × 2/21 × 2 = 100/42 - Subtract the two like fractions:
630/42 - 100/42 = 630 - 100/42 = 530/42 - After reducing the fraction, the answer is 265/21
- In mixed form: 1213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-50/21 90/6-50/42 90/18-50/21 90/6-50/63 90/30-50/21 90/42-50/21