Add 75/18 and 12/40
1st number: 4 3/18, 2nd number: 12/40
75/18 + 12/40 is 67/15.
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,
75/18 = 75 × 20/18 × 20 = 1500/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Add the two like fractions:
1500/360 + 108/360 = 1500 + 108/360 = 1608/360 - 1608/360 simplified gives 67/15
- So, 75/18 + 12/40 = 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: 75/18+24/40 75/36+12/40 75/18+12/80 75/18+36/40 75/54+12/40 75/18+60/40 75/90+12/40 75/18+84/40