Add 20/42 and 12/16
20/42 + 12/16 is 103/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
20/42 = 20 × 8/42 × 8 = 160/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
12/16 = 12 × 21/16 × 21 = 252/336 - Add the two like fractions:
160/336 + 252/336 = 160 + 252/336 = 412/336 - 412/336 simplified gives 103/84
- So, 20/42 + 12/16 = 103/84
In mixed form: 119/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+12/16 20/42+24/16 20/84+12/16 20/42+12/32 60/42+12/16 20/42+36/16 20/42+12/48 20/42+60/16 20/42+12/80 20/42+84/16