Subtract 90/56 from 12/8
1st number: 1 4/8, 2nd number: 1 34/56
12/8 - 90/56 is -3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
12/8 = 12 × 7/8 × 7 = 84/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
90/56 = 90 × 1/56 × 1 = 90/56 - Subtract the two like fractions:
84/56 - 90/56 = 84 - 90/56 = -6/56 - After reducing the fraction, the answer is -3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8-90/56 12/16-90/56 36/8-90/56 12/24-90/56 60/8-90/56 12/40-90/56 84/8-90/56 12/56-90/56