Add 15/72 and 24/90
15/72 + 24/90 is 19/40.
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,
15/72 = 15 × 5/72 × 5 = 75/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
24/90 = 24 × 4/90 × 4 = 96/360 - Add the two like fractions:
75/360 + 96/360 = 75 + 96/360 = 171/360 - 171/360 simplified gives 19/40
- So, 15/72 + 24/90 = 19/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/72+24/90 15/72+48/90 45/72+24/90 15/72+72/90 75/72+24/90