Add 15/30 and 8/5
1st number: 15/30, 2nd number: 1 3/5
15/30 + 8/5 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
15/30 = 15 × 1/30 × 1 = 15/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
8/5 = 8 × 6/5 × 6 = 48/30 - Add the two like fractions:
15/30 + 48/30 = 15 + 48/30 = 63/30 - 63/30 simplified gives 21/10
- So, 15/30 + 8/5 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30+16/5 15/60+8/5 15/30+8/10 45/30+8/5 15/30+24/5 15/90+8/5 15/30+8/15 75/30+8/5 15/30+40/5 15/30+8/25 15/30+56/5 15/30+8/35