Add 40/90 and 21/24
40/90 + 21/24 is 95/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
40/90 = 40 × 4/90 × 4 = 160/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
21/24 = 21 × 15/24 × 15 = 315/360 - Add the two like fractions:
160/360 + 315/360 = 160 + 315/360 = 475/360 - 475/360 simplified gives 95/72
- So, 40/90 + 21/24 = 95/72
In mixed form: 123/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+21/24 40/90+42/24 40/90+21/48 40/90+63/24 40/90+21/72