Add 28/12 and 75/45
1st number: 2 4/12, 2nd number: 1 30/45
28/12 + 75/45 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
28/12 = 28 × 15/12 × 15 = 420/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
75/45 = 75 × 4/45 × 4 = 300/180 - Add the two like fractions:
420/180 + 300/180 = 420 + 300/180 = 720/180 - 720/180 simplified gives 4/1
- So, 28/12 + 75/45 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/12+75/45 28/24+75/45 28/12+75/90 84/12+75/45 28/36+75/45 28/60+75/45 28/84+75/45