Subtract 28/45 from 7/8
7/8 - 28/45 is 91/360.
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,
7/8 = 7 × 45/8 × 45 = 315/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
28/45 = 28 × 8/45 × 8 = 224/360 - Subtract the two like fractions:
315/360 - 224/360 = 315 - 224/360 = 91/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-28/45 7/8-56/45 7/16-28/45 7/8-28/90 21/8-28/45 7/8-84/45 7/24-28/45 35/8-28/45 7/40-28/45 49/8-28/45 7/56-28/45