Add 75/18 and 28/40
1st number: 4 3/18, 2nd number: 28/40
75/18 + 28/40 is 73/15.
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,
28/40 = 28 × 9/40 × 9 = 252/360 - Add the two like fractions:
1500/360 + 252/360 = 1500 + 252/360 = 1752/360 - 1752/360 simplified gives 73/15
- So, 75/18 + 28/40 = 73/15
In mixed form: 413/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/18+56/40 75/36+28/40 75/18+28/80 75/18+84/40 75/54+28/40 75/90+28/40