Add 24/21 and 12/30
1st number: 1 3/21, 2nd number: 12/30
24/21 + 12/30 is 54/35.
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,
24/21 = 24 × 10/21 × 10 = 240/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210 - Add the two like fractions:
240/210 + 84/210 = 240 + 84/210 = 324/210 - 324/210 simplified gives 54/35
- So, 24/21 + 12/30 = 54/35
In mixed form: 119/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/21+12/30 24/21+24/30 24/42+12/30 24/21+12/60 72/21+12/30 24/21+36/30 24/63+12/30 24/21+12/90 24/21+60/30 24/21+84/30