Add 81/30 and 8/5
1st number: 2 21/30, 2nd number: 1 3/5
81/30 + 8/5 is 43/10.
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,
81/30 = 81 × 1/30 × 1 = 81/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
8/5 = 8 × 6/5 × 6 = 48/30 - Add the two like fractions:
81/30 + 48/30 = 81 + 48/30 = 129/30 - 129/30 simplified gives 43/10
- So, 81/30 + 8/5 = 43/10
In mixed form: 43/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+16/5 81/60+8/5 81/30+8/10 81/30+24/5 81/90+8/5 81/30+8/15 81/30+40/5 81/30+8/25 81/30+56/5 81/30+8/35