Add 12/35 and 42/81
12/35 + 42/81 is 814/945.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835
Next, find the equivalent fraction of both fractional numbers with denominator 2835 - For the 1st fraction, since 35 × 81 = 2835,
12/35 = 12 × 81/35 × 81 = 972/2835 - Likewise, for the 2nd fraction, since 81 × 35 = 2835,
42/81 = 42 × 35/81 × 35 = 1470/2835 - Add the two like fractions:
972/2835 + 1470/2835 = 972 + 1470/2835 = 2442/2835 - 2442/2835 simplified gives 814/945
- So, 12/35 + 42/81 = 814/945
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/35+42/81 12/35+84/81 12/70+42/81 36/35+42/81 60/35+42/81 84/35+42/81