Subtract 45/56 from 8/30
8/30 - 45/56 is -451/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
8/30 = 8 × 28/30 × 28 = 224/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
45/56 = 45 × 15/56 × 15 = 675/840 - Subtract the two like fractions:
224/840 - 675/840 = 224 - 675/840 = -451/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-45/56 8/30-90/56 8/60-45/56 24/30-45/56 8/90-45/56 40/30-45/56 56/30-45/56