Add 40/90 and 7/72
40/90 + 7/72 is 13/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 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 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Add the two like fractions:
160/360 + 35/360 = 160 + 35/360 = 195/360 - 195/360 simplified gives 13/24
- So, 40/90 + 7/72 = 13/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+7/72 40/90+14/72 40/90+21/72 40/90+35/72 40/90+49/72