Add 28/48 and 12/45
28/48 + 12/45 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 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 45 × 16 = 720,
12/45 = 12 × 16/45 × 16 = 192/720 - Add the two like fractions:
420/720 + 192/720 = 420 + 192/720 = 612/720 - 612/720 simplified gives 17/20
- So, 28/48 + 12/45 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/48+12/45 28/48+24/45 28/96+12/45 28/48+12/90 84/48+12/45 28/48+36/45 28/48+60/45 28/48+84/45