Add 54/20 and 84/56
1st number: 2 14/20, 2nd number: 1 28/56
54/20 + 84/56 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
54/20 = 54 × 14/20 × 14 = 756/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
84/56 = 84 × 5/56 × 5 = 420/280 - Add the two like fractions:
756/280 + 420/280 = 756 + 420/280 = 1176/280 - 1176/280 simplified gives 21/5
- So, 54/20 + 84/56 = 21/5
In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+84/56 54/60+84/56