Add 16/21 and 42/10
1st number: 16/21, 2nd number: 4 2/10
16/21 + 42/10 is 521/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
16/21 = 16 × 10/21 × 10 = 160/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
42/10 = 42 × 21/10 × 21 = 882/210 - Add the two like fractions:
160/210 + 882/210 = 160 + 882/210 = 1042/210 - 1042/210 simplified gives 521/105
- So, 16/21 + 42/10 = 521/105
In mixed form: 4101/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+42/10 16/21+84/10 16/42+42/10 16/21+42/20 48/21+42/10 16/63+42/10 16/21+42/30 80/21+42/10 16/21+42/50 16/21+42/70