Add 25/90 and 84/72
1st number: 25/90, 2nd number: 1 12/72
25/90 + 84/72 is 13/9.
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,
25/90 = 25 × 4/90 × 4 = 100/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
100/360 + 420/360 = 100 + 420/360 = 520/360 - 520/360 simplified gives 13/9
- So, 25/90 + 84/72 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90+84/72 75/90+84/72