Add 72/45 and 7/8
1st number: 1 27/45, 2nd number: 7/8
72/45 + 7/8 is 99/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
72/45 = 72 × 8/45 × 8 = 576/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
7/8 = 7 × 45/8 × 45 = 315/360 - Add the two like fractions:
576/360 + 315/360 = 576 + 315/360 = 891/360 - 891/360 simplified gives 99/40
- So, 72/45 + 7/8 = 99/40
In mixed form: 219/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45+14/8 72/90+7/8 72/45+7/16 72/45+21/8 72/45+7/24 72/45+35/8 72/45+7/40 72/45+49/8 72/45+7/56