Add 20/8 and 45/60
1st number: 2 4/8, 2nd number: 45/60
20/8 + 45/60 is 13/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
20/8 = 20 × 15/8 × 15 = 300/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
45/60 = 45 × 2/60 × 2 = 90/120 - Add the two like fractions:
300/120 + 90/120 = 300 + 90/120 = 390/120 - 390/120 simplified gives 13/4
- So, 20/8 + 45/60 = 13/4
In mixed form: 31/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+45/60 20/8+90/60 20/16+45/60 60/8+45/60 20/24+45/60 20/40+45/60 20/56+45/60