Add 20/42 and 30/36
20/42 + 30/36 is 55/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 42 × 6 = 252,
20/42 = 20 × 6/42 × 6 = 120/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
30/36 = 30 × 7/36 × 7 = 210/252 - Add the two like fractions:
120/252 + 210/252 = 120 + 210/252 = 330/252 - 330/252 simplified gives 55/42
- So, 20/42 + 30/36 = 55/42
In mixed form: 113/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+30/36 20/42+60/36 20/84+30/36 20/42+30/72 60/42+30/36 20/42+90/36