Add 90/40 and 27/72
1st number: 2 10/40, 2nd number: 27/72
90/40 + 27/72 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
27/72 = 27 × 5/72 × 5 = 135/360 - Add the two like fractions:
810/360 + 135/360 = 810 + 135/360 = 945/360 - 945/360 simplified gives 21/8
- So, 90/40 + 27/72 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+54/72 90/80+27/72 90/40+81/72