Add 28/16 and 45/20
1st number: 1 12/16, 2nd number: 2 5/20
28/16 + 45/20 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
28/16 = 28 × 5/16 × 5 = 140/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
45/20 = 45 × 4/20 × 4 = 180/80 - Add the two like fractions:
140/80 + 180/80 = 140 + 180/80 = 320/80 - 320/80 simplified gives 4/1
- So, 28/16 + 45/20 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/16+45/20 28/16+90/20 28/32+45/20 28/16+45/40 84/16+45/20 28/48+45/20 28/16+45/60 28/80+45/20