Add 15/35 and 4/12
15/35 + 4/12 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
15/35 = 15 × 12/35 × 12 = 180/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
4/12 = 4 × 35/12 × 35 = 140/420 - Add the two like fractions:
180/420 + 140/420 = 180 + 140/420 = 320/420 - 320/420 simplified gives 16/21
- So, 15/35 + 4/12 = 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/35+4/12 15/35+8/12 15/70+4/12 15/35+4/24 45/35+4/12 15/35+4/36 75/35+4/12 15/35+20/12 15/35+4/60 15/35+28/12 15/35+4/84