Add 30/72 and 35/90
30/72 + 35/90 is 29/36.
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,
35/90 = 35 × 4/90 × 4 = 140/360 - Add the two like fractions:
150/360 + 140/360 = 150 + 140/360 = 290/360 - 290/360 simplified gives 29/36
- So, 30/72 + 35/90 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+35/90 30/72+70/90 90/72+35/90