Subtract 18/8 from 45/4
1st number: 11 1/4, 2nd number: 2 2/8
45/4 - 18/8 is 9/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
45/4 = 45 × 2/4 × 2 = 90/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
18/8 = 18 × 1/8 × 1 = 18/8 - Subtract the two like fractions:
90/8 - 18/8 = 90 - 18/8 = 72/8 - After reducing the fraction, the answer is 9/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-18/8 45/4-36/8 45/8-18/8 45/4-18/16 45/4-54/8 45/12-18/8 45/4-18/24 45/4-90/8 45/20-18/8 45/4-18/40 45/28-18/8 45/4-18/56