Subtract 25/30 from 40/56
40/56 - 25/30 is -5/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
40/56 = 40 × 15/56 × 15 = 600/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
25/30 = 25 × 28/30 × 28 = 700/840 - Subtract the two like fractions:
600/840 - 700/840 = 600 - 700/840 = -100/840 - After reducing the fraction, the answer is -5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/56-25/30 40/56-50/30 40/56-25/60 40/56-75/30 40/56-25/90