Add 16/72 and 21/30
16/72 + 21/30 is 83/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
16/72 = 16 × 5/72 × 5 = 80/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
21/30 = 21 × 12/30 × 12 = 252/360 - Add the two like fractions:
80/360 + 252/360 = 80 + 252/360 = 332/360 - 332/360 simplified gives 83/90
- So, 16/72 + 21/30 = 83/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/72+21/30 16/72+42/30 16/72+21/60 48/72+21/30 16/72+63/30 16/72+21/90 80/72+21/30