Add 28/48 and 45/90
28/48 + 45/90 is 13/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
28/48 = 28 × 15/48 × 15 = 420/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
45/90 = 45 × 8/90 × 8 = 360/720 - Add the two like fractions:
420/720 + 360/720 = 420 + 360/720 = 780/720 - 780/720 simplified gives 13/12
- So, 28/48 + 45/90 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/48+45/90 28/96+45/90 84/48+45/90