Subtract 35/18 from 45/30
1st number: 1 15/30, 2nd number: 1 17/18
45/30 - 35/18 is -4/9.
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,
45/30 = 45 × 3/30 × 3 = 135/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
35/18 = 35 × 5/18 × 5 = 175/90 - Subtract the two like fractions:
135/90 - 175/90 = 135 - 175/90 = -40/90 - After reducing the fraction, the answer is -4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-35/18 45/30-70/18 45/60-35/18 45/30-35/36 45/90-35/18 45/30-35/54 45/30-35/90