Add 12/5 and 28/42
1st number: 2 2/5, 2nd number: 28/42
12/5 + 28/42 is 46/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
12/5 = 12 × 42/5 × 42 = 504/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210 - Add the two like fractions:
504/210 + 140/210 = 504 + 140/210 = 644/210 - 644/210 simplified gives 46/15
- So, 12/5 + 28/42 = 46/15
In mixed form: 31/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5+28/42 12/5+56/42 12/10+28/42 12/5+28/84 36/5+28/42 12/5+84/42 12/15+28/42 60/5+28/42 12/25+28/42 84/5+28/42 12/35+28/42