Add 54/12 and 20/84
1st number: 4 6/12, 2nd number: 20/84
54/12 + 20/84 is 199/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
54/12 = 54 × 7/12 × 7 = 378/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Add the two like fractions:
378/84 + 20/84 = 378 + 20/84 = 398/84 - 398/84 simplified gives 199/42
- So, 54/12 + 20/84 = 199/42
In mixed form: 431/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12+40/84 54/24+20/84 54/12+60/84 54/36+20/84 54/60+20/84 54/84+20/84