Add 21/50 and 12/42
21/50 + 12/42 is 247/350.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
21/50 = 21 × 21/50 × 21 = 441/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
12/42 = 12 × 25/42 × 25 = 300/1050 - Add the two like fractions:
441/1050 + 300/1050 = 441 + 300/1050 = 741/1050 - 741/1050 simplified gives 247/350
- So, 21/50 + 12/42 = 247/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50+12/42 21/50+24/42 21/50+12/84 63/50+12/42 21/50+36/42 21/50+60/42 21/50+84/42