Subtract 90/25 from 18/56
1st number: 18/56, 2nd number: 3 15/25
18/56 - 90/25 is -459/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 25 is 1400
Next, find the equivalent fraction of both fractional numbers with denominator 1400 - For the 1st fraction, since 56 × 25 = 1400,
18/56 = 18 × 25/56 × 25 = 450/1400 - Likewise, for the 2nd fraction, since 25 × 56 = 1400,
90/25 = 90 × 56/25 × 56 = 5040/1400 - Subtract the two like fractions:
450/1400 - 5040/1400 = 450 - 5040/1400 = -4590/1400 - After reducing the fraction, the answer is -459/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56-90/25 18/56-90/50 54/56-90/25 18/56-90/75 90/56-90/25