Add 42/16 and 56/20
1st number: 2 10/16, 2nd number: 2 16/20
42/16 + 56/20 is 217/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
56/20 = 56 × 4/20 × 4 = 224/80 - Add the two like fractions:
210/80 + 224/80 = 210 + 224/80 = 434/80 - 434/80 simplified gives 217/40
- So, 42/16 + 56/20 = 217/40
In mixed form: 517/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+56/20 42/32+56/20 42/16+56/40 42/48+56/20 42/16+56/60 42/80+56/20