Add 15/8 and 45/30
1st number: 1 7/8, 2nd number: 1 15/30
15/8 + 45/30 is 27/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120 - Add the two like fractions:
225/120 + 180/120 = 225 + 180/120 = 405/120 - 405/120 simplified gives 27/8
- So, 15/8 + 45/30 = 27/8
In mixed form: 33/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8+45/30 15/8+90/30 15/16+45/30 15/8+45/60 45/8+45/30 15/24+45/30 15/8+45/90 75/8+45/30 15/40+45/30 15/56+45/30