Add 28/15 and 4/72
1st number: 1 13/15, 2nd number: 4/72
28/15 + 4/72 is 173/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
28/15 = 28 × 24/15 × 24 = 672/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
4/72 = 4 × 5/72 × 5 = 20/360 - Add the two like fractions:
672/360 + 20/360 = 672 + 20/360 = 692/360 - 692/360 simplified gives 173/90
- So, 28/15 + 4/72 = 173/90
In mixed form: 183/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+4/72 28/15+8/72 28/30+4/72 84/15+4/72 28/15+12/72 28/45+4/72 28/15+20/72 28/75+4/72 28/15+28/72