Add 80/16 and 63/42
1st number: 5 0/16, 2nd number: 1 21/42
80/16 + 63/42 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
80/16 = 80 × 21/16 × 21 = 1680/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
63/42 = 63 × 8/42 × 8 = 504/336 - Add the two like fractions:
1680/336 + 504/336 = 1680 + 504/336 = 2184/336 - 2184/336 simplified gives 13/2
- So, 80/16 + 63/42 = 13/2
In mixed form: 61/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/32+63/42 80/16+63/84 80/48+63/42