Subtract 18/45 from 4/8
4/8 - 18/45 is 1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
4/8 = 4 × 45/8 × 45 = 180/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
18/45 = 18 × 8/45 × 8 = 144/360 - Subtract the two like fractions:
180/360 - 144/360 = 180 - 144/360 = 36/360 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8-36/45 4/16-18/45 4/8-18/90 12/8-18/45 4/8-54/45 4/24-18/45 20/8-18/45 4/8-90/45 4/40-18/45 28/8-18/45 4/56-18/45