Add 60/40 and 30/18
1st number: 1 20/40, 2nd number: 1 12/18
60/40 + 30/18 is 19/6.
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,
60/40 = 60 × 9/40 × 9 = 540/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
30/18 = 30 × 20/18 × 20 = 600/360 - Add the two like fractions:
540/360 + 600/360 = 540 + 600/360 = 1140/360 - 1140/360 simplified gives 19/6
- So, 60/40 + 30/18 = 19/6
In mixed form: 31/6
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 60/80+30/18 60/40+30/36 60/40+90/18 60/40+30/54 60/40+30/90