Subtract 90/35 from 56/28
1st number: 2 0/28, 2nd number: 2 20/35
56/28 - 90/35 is -4/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
56/28 = 56 × 5/28 × 5 = 280/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
90/35 = 90 × 4/35 × 4 = 360/140 - Subtract the two like fractions:
280/140 - 360/140 = 280 - 360/140 = -80/140 - After reducing the fraction, the answer is -4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/28-90/70 56/84-90/35