Add 20/5 and 84/64
1st number: 4 0/5, 2nd number: 1 20/64
20/5 + 84/64 is 85/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 64 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 5 × 64 = 320,
20/5 = 20 × 64/5 × 64 = 1280/320 - Likewise, for the 2nd fraction, since 64 × 5 = 320,
84/64 = 84 × 5/64 × 5 = 420/320 - Add the two like fractions:
1280/320 + 420/320 = 1280 + 420/320 = 1700/320 - 1700/320 simplified gives 85/16
- So, 20/5 + 84/64 = 85/16
In mixed form: 55/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/5+84/64 20/10+84/64 60/5+84/64 20/15+84/64 20/25+84/64 20/35+84/64