Add 28/40 and 25/18
1st number: 28/40, 2nd number: 1 7/18
28/40 + 25/18 is 94/45.
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,
28/40 = 28 × 9/40 × 9 = 252/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
25/18 = 25 × 20/18 × 20 = 500/360 - Add the two like fractions:
252/360 + 500/360 = 252 + 500/360 = 752/360 - 752/360 simplified gives 94/45
- So, 28/40 + 25/18 = 94/45
In mixed form: 24/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+25/18 28/40+50/18 28/80+25/18 28/40+25/36 84/40+25/18 28/40+75/18 28/40+25/54 28/40+25/90