Subtract 36/8 from 90/28
1st number: 3 6/28, 2nd number: 4 4/8
90/28 - 36/8 is -9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
90/28 = 90 × 2/28 × 2 = 180/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
36/8 = 36 × 7/8 × 7 = 252/56 - Subtract the two like fractions:
180/56 - 252/56 = 180 - 252/56 = -72/56 - After reducing the fraction, the answer is -9/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-72/8 90/56-36/8 90/28-36/16 90/84-36/8 90/28-36/24 90/28-36/40 90/28-36/56