Add 42/50 and 12/81
42/50 + 12/81 is 667/675.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
42/50 = 42 × 81/50 × 81 = 3402/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
12/81 = 12 × 50/81 × 50 = 600/4050 - Add the two like fractions:
3402/4050 + 600/4050 = 3402 + 600/4050 = 4002/4050 - 4002/4050 simplified gives 667/675
- So, 42/50 + 12/81 = 667/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50+12/81 42/50+24/81 42/50+36/81 42/50+60/81 42/50+84/81