Add 30/18 and 18/40
1st number: 1 12/18, 2nd number: 18/40
30/18 + 18/40 is 127/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
30/18 = 30 × 20/18 × 20 = 600/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Add the two like fractions:
600/360 + 162/360 = 600 + 162/360 = 762/360 - 762/360 simplified gives 127/60
- So, 30/18 + 18/40 = 127/60
In mixed form: 27/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+18/40 30/18+36/40 30/36+18/40 30/18+18/80 90/18+18/40 30/18+54/40 30/54+18/40 30/18+90/40 30/90+18/40