Add 42/50 and 20/30
42/50 + 20/30 is 113/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
42/50 = 42 × 3/50 × 3 = 126/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
20/30 = 20 × 5/30 × 5 = 100/150 - Add the two like fractions:
126/150 + 100/150 = 126 + 100/150 = 226/150 - 226/150 simplified gives 113/75
- So, 42/50 + 20/30 = 113/75
In mixed form: 138/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50+20/30 42/50+40/30 42/50+20/60 42/50+60/30 42/50+20/90