Add 18/21 and 16/10
1st number: 18/21, 2nd number: 1 6/10
18/21 + 16/10 is 86/35.
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,
18/21 = 18 × 10/21 × 10 = 180/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
16/10 = 16 × 21/10 × 21 = 336/210 - Add the two like fractions:
180/210 + 336/210 = 180 + 336/210 = 516/210 - 516/210 simplified gives 86/35
- So, 18/21 + 16/10 = 86/35
In mixed form: 216/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+16/10 18/21+32/10 18/42+16/10 18/21+16/20 54/21+16/10 18/21+48/10 18/63+16/10 18/21+16/30 90/21+16/10 18/21+80/10 18/21+16/50 18/21+16/70