Add 4/15 and 12/42
4/15 + 12/42 is 58/105.
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,
4/15 = 4 × 14/15 × 14 = 56/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Add the two like fractions:
56/210 + 60/210 = 56 + 60/210 = 116/210 - 116/210 simplified gives 58/105
- So, 4/15 + 12/42 = 58/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+12/42 4/15+24/42 4/30+12/42 4/15+12/84 12/15+12/42 4/15+36/42 4/45+12/42 20/15+12/42 4/15+60/42 4/75+12/42 28/15+12/42 4/15+84/42