Add 45/24 and 30/40
1st number: 1 21/24, 2nd number: 30/40
45/24 + 30/40 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120 - Add the two like fractions:
225/120 + 90/120 = 225 + 90/120 = 315/120 - 315/120 simplified gives 21/8
- So, 45/24 + 30/40 = 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: 90/24+30/40 45/24+60/40 45/48+30/40 45/24+30/80 45/24+90/40 45/72+30/40