Add 72/16 and 5/42
1st number: 4 8/16, 2nd number: 5/42
72/16 + 5/42 is 97/21.
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,
72/16 = 72 × 21/16 × 21 = 1512/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
5/42 = 5 × 8/42 × 8 = 40/336 - Add the two like fractions:
1512/336 + 40/336 = 1512 + 40/336 = 1552/336 - 1552/336 simplified gives 97/21
- So, 72/16 + 5/42 = 97/21
In mixed form: 413/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16+10/42 72/32+5/42 72/16+5/84 72/16+15/42 72/48+5/42 72/16+25/42 72/80+5/42 72/16+35/42