Add 45/28 and 72/18
1st number: 1 17/28, 2nd number: 4 0/18
45/28 + 72/18 is 157/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
45/28 = 45 × 9/28 × 9 = 405/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
72/18 = 72 × 14/18 × 14 = 1008/252 - Add the two like fractions:
405/252 + 1008/252 = 405 + 1008/252 = 1413/252 - 1413/252 simplified gives 157/28
- So, 45/28 + 72/18 = 157/28
In mixed form: 517/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+72/18 45/56+72/18 45/28+72/36 45/84+72/18 45/28+72/54 45/28+72/90