Add 24/30 and 1/21
24/30 + 1/21 is 89/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
24/30 = 24 × 7/30 × 7 = 168/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
1/21 = 1 × 10/21 × 10 = 10/210 - Add the two like fractions:
168/210 + 10/210 = 168 + 10/210 = 178/210 - 178/210 simplified gives 89/105
- So, 24/30 + 1/21 = 89/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/30+1/21 24/30+2/21 24/60+1/21 24/30+1/42 72/30+1/21 24/30+3/21 24/90+1/21 24/30+1/63 24/30+5/21 24/30+7/21