Add 12/15 and 24/42
12/15 + 24/42 is 48/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
24/42 = 24 × 5/42 × 5 = 120/210 - Add the two like fractions:
168/210 + 120/210 = 168 + 120/210 = 288/210 - 288/210 simplified gives 48/35
- So, 12/15 + 24/42 = 48/35
In mixed form: 113/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+24/42 12/15+48/42 12/30+24/42 12/15+24/84 36/15+24/42 12/15+72/42 12/45+24/42 60/15+24/42 12/75+24/42 84/15+24/42