Add 7/10 and 21/72
7/10 + 21/72 is 119/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
7/10 = 7 × 36/10 × 36 = 252/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
252/360 + 105/360 = 252 + 105/360 = 357/360 - 357/360 simplified gives 119/120
- So, 7/10 + 21/72 = 119/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+21/72 7/10+42/72 7/20+21/72 21/10+21/72 7/10+63/72 7/30+21/72 35/10+21/72 7/50+21/72 49/10+21/72 7/70+21/72