Add 30/40 and 60/18
1st number: 30/40, 2nd number: 3 6/18
30/40 + 60/18 is 49/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
30/40 = 30 × 9/40 × 9 = 270/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
60/18 = 60 × 20/18 × 20 = 1200/360 - Add the two like fractions:
270/360 + 1200/360 = 270 + 1200/360 = 1470/360 - 1470/360 simplified gives 49/12
- So, 30/40 + 60/18 = 49/12
In mixed form: 41/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+60/18 30/80+60/18 30/40+60/36 90/40+60/18 30/40+60/54 30/40+60/90