Add 84/4 and 56/5
1st number: 21 0/4, 2nd number: 11 1/5
84/4 + 56/5 is 161/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
84/4 = 84 × 5/4 × 5 = 420/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
56/5 = 56 × 4/5 × 4 = 224/20 - Add the two like fractions:
420/20 + 224/20 = 420 + 224/20 = 644/20 - 644/20 simplified gives 161/5
- So, 84/4 + 56/5 = 161/5
In mixed form: 321/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+56/5 84/4+56/10 84/12+56/5 84/4+56/15 84/20+56/5 84/4+56/25 84/28+56/5 84/4+56/35