Add 12/40 and 75/18
1st number: 12/40, 2nd number: 4 3/18
12/40 + 75/18 is 67/15.
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,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
75/18 = 75 × 20/18 × 20 = 1500/360 - Add the two like fractions:
108/360 + 1500/360 = 108 + 1500/360 = 1608/360 - 1608/360 simplified gives 67/15
- So, 12/40 + 75/18 = 67/15
In mixed form: 47/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+75/18 12/80+75/18 12/40+75/36 36/40+75/18 12/40+75/54 60/40+75/18 12/40+75/90 84/40+75/18