Add 30/40 and 18/8
1st number: 30/40, 2nd number: 2 2/8
30/40 + 18/8 is 3/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
18/8 = 18 × 5/8 × 5 = 90/40 - Add the two like fractions:
30/40 + 90/40 = 30 + 90/40 = 120/40 - 120/40 simplified gives 3/1
- So, 30/40 + 18/8 = 3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+18/8 30/40+36/8 30/80+18/8 30/40+18/16 90/40+18/8 30/40+54/8 30/40+18/24 30/40+90/8 30/40+18/40 30/40+18/56