Add 28/7 and 15/45
1st number: 4 0/7, 2nd number: 15/45
28/7 + 15/45 is 13/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
28/7 = 28 × 45/7 × 45 = 1260/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
15/45 = 15 × 7/45 × 7 = 105/315 - Add the two like fractions:
1260/315 + 105/315 = 1260 + 105/315 = 1365/315 - 1365/315 simplified gives 13/3
- So, 28/7 + 15/45 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+15/45 28/7+30/45 28/14+15/45 28/7+15/90 84/7+15/45 28/21+15/45 28/7+75/45 28/35+15/45 28/49+15/45