Add 21/5 and 84/30
1st number: 4 1/5, 2nd number: 2 24/30
21/5 + 84/30 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
21/5 = 21 × 6/5 × 6 = 126/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
84/30 = 84 × 1/30 × 1 = 84/30 - Add the two like fractions:
126/30 + 84/30 = 126 + 84/30 = 210/30 - 210/30 simplified gives 7/1
- So, 21/5 + 84/30 = 7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+84/30 21/10+84/30 21/5+84/60 63/5+84/30 21/15+84/30 21/5+84/90 21/25+84/30 21/35+84/30