Add 8/72 and 3/90
8/72 + 3/90 is 13/90.
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,
8/72 = 8 × 5/72 × 5 = 40/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
3/90 = 3 × 4/90 × 4 = 12/360 - Add the two like fractions:
40/360 + 12/360 = 40 + 12/360 = 52/360 - 52/360 simplified gives 13/90
- So, 8/72 + 3/90 = 13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72+3/90 8/72+6/90 24/72+3/90 8/72+9/90 40/72+3/90 8/72+15/90 56/72+3/90 8/72+21/90