Add 9/42 and 20/25
9/42 + 20/25 is 71/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 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 25 × 42 = 1050,
20/25 = 20 × 42/25 × 42 = 840/1050 - Add the two like fractions:
225/1050 + 840/1050 = 225 + 840/1050 = 1065/1050 - 1065/1050 simplified gives 71/70
- So, 9/42 + 20/25 = 71/70
In mixed form: 11/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+20/25 9/42+40/25 9/84+20/25 9/42+20/50 27/42+20/25 9/42+60/25 9/42+20/75 45/42+20/25 63/42+20/25