Add 28/36 and 4/45
28/36 + 4/45 is 13/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
28/36 = 28 × 5/36 × 5 = 140/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
4/45 = 4 × 4/45 × 4 = 16/180 - Add the two like fractions:
140/180 + 16/180 = 140 + 16/180 = 156/180 - 156/180 simplified gives 13/15
- So, 28/36 + 4/45 = 13/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/36+4/45 28/36+8/45 28/72+4/45 28/36+4/90 84/36+4/45 28/36+12/45 28/36+20/45 28/36+28/45