Add 28/4 and 72/45
1st number: 7 0/4, 2nd number: 1 27/45
28/4 + 72/45 is 43/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
28/4 = 28 × 45/4 × 45 = 1260/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Add the two like fractions:
1260/180 + 288/180 = 1260 + 288/180 = 1548/180 - 1548/180 simplified gives 43/5
- So, 28/4 + 72/45 = 43/5
In mixed form: 83/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4+72/45 28/8+72/45 28/4+72/90 84/4+72/45 28/12+72/45 28/20+72/45