Subtract 63/18 from 75/30
1st number: 2 15/30, 2nd number: 3 9/18
75/30 - 63/18 is -1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Subtract the two like fractions:
225/90 - 315/90 = 225 - 315/90 = -90/90 - After reducing the fraction, the answer is -1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/60-63/18 75/30-63/36 75/90-63/18 75/30-63/54 75/30-63/90