Add 3/72 and 5/90
3/72 + 5/90 is 7/72.
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,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
15/360 + 20/360 = 15 + 20/360 = 35/360 - 35/360 simplified gives 7/72
- So, 3/72 + 5/90 = 7/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/72+5/90 3/72+10/90 9/72+5/90 3/72+15/90 15/72+5/90 3/72+25/90 21/72+5/90 3/72+35/90