Add 28/72 and 90/60
1st number: 28/72, 2nd number: 1 30/60
28/72 + 90/60 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 60 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Likewise, for the 2nd fraction, since 60 × 6 = 360,
90/60 = 90 × 6/60 × 6 = 540/360 - Add the two like fractions:
140/360 + 540/360 = 140 + 540/360 = 680/360 - 680/360 simplified gives 17/9
- So, 28/72 + 90/60 = 17/9
In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72+90/60 84/72+90/60