Add 21/35 and 42/50
21/35 + 42/50 is 36/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 35 × 10 = 350,
21/35 = 21 × 10/35 × 10 = 210/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
42/50 = 42 × 7/50 × 7 = 294/350 - Add the two like fractions:
210/350 + 294/350 = 210 + 294/350 = 504/350 - 504/350 simplified gives 36/25
- So, 21/35 + 42/50 = 36/25
In mixed form: 111/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35+42/50 21/35+84/50 21/70+42/50 63/35+42/50