Add 28/40 and 42/3
1st number: 28/40, 2nd number: 14 0/3
28/40 + 42/3 is 147/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 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 3 × 40 = 120,
42/3 = 42 × 40/3 × 40 = 1680/120 - Add the two like fractions:
84/120 + 1680/120 = 84 + 1680/120 = 1764/120 - 1764/120 simplified gives 147/10
- So, 28/40 + 42/3 = 147/10
In mixed form: 147/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+42/3 28/40+84/3 28/80+42/3 28/40+42/6 84/40+42/3 28/40+42/9 28/40+42/15 28/40+42/21