Add 12/21 and 42/50
12/21 + 42/50 is 247/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
12/21 = 12 × 50/21 × 50 = 600/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
42/50 = 42 × 21/50 × 21 = 882/1050 - Add the two like fractions:
600/1050 + 882/1050 = 600 + 882/1050 = 1482/1050 - 1482/1050 simplified gives 247/175
- So, 12/21 + 42/50 = 247/175
In mixed form: 172/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21+42/50 12/21+84/50 12/42+42/50 36/21+42/50 12/63+42/50 60/21+42/50 84/21+42/50