Add 45/30 and 18/8
1st number: 1 15/30, 2nd number: 2 2/8
45/30 + 18/8 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
18/8 = 18 × 15/8 × 15 = 270/120 - Add the two like fractions:
180/120 + 270/120 = 180 + 270/120 = 450/120 - 450/120 simplified gives 15/4
- So, 45/30 + 18/8 = 15/4
In mixed form: 33/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30+18/8 45/30+36/8 45/60+18/8 45/30+18/16 45/30+54/8 45/90+18/8 45/30+18/24 45/30+90/8 45/30+18/40 45/30+18/56