Add 28/80 and 45/10
1st number: 28/80, 2nd number: 4 5/10
28/80 + 45/10 is 97/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
45/10 = 45 × 8/10 × 8 = 360/80 - Add the two like fractions:
28/80 + 360/80 = 28 + 360/80 = 388/80 - 388/80 simplified gives 97/20
- So, 28/80 + 45/10 = 97/20
In mixed form: 417/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+45/10 28/80+90/10 28/80+45/20 84/80+45/10 28/80+45/30 28/80+45/50 28/80+45/70