Add 16/21 and 12/30
16/21 + 12/30 is 122/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 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 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Add the two like fractions:
160/210 + 84/210 = 160 + 84/210 = 244/210 - 244/210 simplified gives 122/105
- So, 16/21 + 12/30 = 122/105
In mixed form: 117/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21+12/30 16/21+24/30 16/42+12/30 16/21+12/60 48/21+12/30 16/21+36/30 16/63+12/30 16/21+12/90 80/21+12/30 16/21+60/30 16/21+84/30