Add 21/35 and 24/30
21/35 + 24/30 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
24/30 = 24 × 7/30 × 7 = 168/210 - Add the two like fractions:
126/210 + 168/210 = 126 + 168/210 = 294/210 - 294/210 simplified gives 7/5
- So, 21/35 + 24/30 = 7/5
In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35+24/30 21/35+48/30 21/70+24/30 21/35+24/60 63/35+24/30 21/35+72/30 21/35+24/90