Subtract 18/30 from 45/8
1st number: 5 5/8, 2nd number: 18/30
45/8 - 18/30 is 201/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
45/8 = 45 × 15/8 × 15 = 675/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Subtract the two like fractions:
675/120 - 72/120 = 675 - 72/120 = 603/120 - After reducing the fraction, the answer is 201/40
- In mixed form: 51/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-18/30 45/8-36/30 45/16-18/30 45/8-18/60 45/8-54/30 45/24-18/30 45/8-18/90 45/8-90/30 45/40-18/30 45/56-18/30