Add 7/72 and 28/80
7/72 + 28/80 is 161/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
7/72 = 7 × 10/72 × 10 = 70/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Add the two like fractions:
70/720 + 252/720 = 70 + 252/720 = 322/720 - 322/720 simplified gives 161/360
- So, 7/72 + 28/80 = 161/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72+28/80 7/72+56/80 21/72+28/80 7/72+84/80 35/72+28/80 49/72+28/80