Add 28/40 and 45/15
1st number: 28/40, 2nd number: 3 0/15
28/40 + 45/15 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120 - Add the two like fractions:
84/120 + 360/120 = 84 + 360/120 = 444/120 - 444/120 simplified gives 37/10
- So, 28/40 + 45/15 = 37/10
In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+45/15 28/40+90/15 28/80+45/15 28/40+45/30 84/40+45/15 28/40+45/75