Add 45/60 and 15/8
1st number: 45/60, 2nd number: 1 7/8
45/60 + 15/8 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
45/60 = 45 × 2/60 × 2 = 90/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120 - Add the two like fractions:
90/120 + 225/120 = 90 + 225/120 = 315/120 - 315/120 simplified gives 21/8
- So, 45/60 + 15/8 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+15/8 45/60+30/8 45/60+15/16 45/60+45/8 45/60+15/24 45/60+75/8 45/60+15/40 45/60+15/56