Add 30/72 and 49/90
30/72 + 49/90 is 173/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
30/72 = 30 × 5/72 × 5 = 150/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
49/90 = 49 × 4/90 × 4 = 196/360 - Add the two like fractions:
150/360 + 196/360 = 150 + 196/360 = 346/360 - 346/360 simplified gives 173/180
- So, 30/72 + 49/90 = 173/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+49/90 30/72+98/90 90/72+49/90