Add 9/42 and 20/50
9/42 + 20/50 is 43/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
9/42 = 9 × 25/42 × 25 = 225/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
20/50 = 20 × 21/50 × 21 = 420/1050 - Add the two like fractions:
225/1050 + 420/1050 = 225 + 420/1050 = 645/1050 - 645/1050 simplified gives 43/70
- So, 9/42 + 20/50 = 43/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+20/50 9/42+40/50 9/84+20/50 27/42+20/50 9/42+60/50 45/42+20/50 63/42+20/50