Add 3/2 and 18/40
1st number: 1 1/2, 2nd number: 18/40
3/2 + 18/40 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
3/2 = 3 × 20/2 × 20 = 60/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
18/40 = 18 × 1/40 × 1 = 18/40 - Add the two like fractions:
60/40 + 18/40 = 60 + 18/40 = 78/40 - 78/40 simplified gives 39/20
- So, 3/2 + 18/40 = 39/20
In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/2+18/40 3/2+36/40 3/4+18/40 3/2+18/80 9/2+18/40 3/2+54/40 3/6+18/40 15/2+18/40 3/2+90/40 3/10+18/40 21/2+18/40 3/14+18/40