Add 21/30 and 8/25
21/30 + 8/25 is 51/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 25 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
21/30 = 21 × 5/30 × 5 = 105/150 - Likewise, for the 2nd fraction, since 25 × 6 = 150,
8/25 = 8 × 6/25 × 6 = 48/150 - Add the two like fractions:
105/150 + 48/150 = 105 + 48/150 = 153/150 - 153/150 simplified gives 51/50
- So, 21/30 + 8/25 = 51/50
In mixed form: 11/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30+8/25 21/30+16/25 21/60+8/25 21/30+8/50 63/30+8/25 21/30+24/25 21/90+8/25 21/30+8/75 21/30+40/25 21/30+56/25