Subtract 10/21 from 90/56
1st number: 1 34/56, 2nd number: 10/21
90/56 - 10/21 is 95/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
90/56 = 90 × 3/56 × 3 = 270/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
10/21 = 10 × 8/21 × 8 = 80/168 - Subtract the two like fractions:
270/168 - 80/168 = 270 - 80/168 = 190/168 - After reducing the fraction, the answer is 95/84
- In mixed form: 111/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/56-20/21 90/56-10/42 90/56-30/21 90/56-10/63 90/56-50/21 90/56-70/21