Add 80/5 and 20/42
1st number: 16 0/5, 2nd number: 20/42
80/5 + 20/42 is 346/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
80/5 = 80 × 42/5 × 42 = 3360/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
3360/210 + 100/210 = 3360 + 100/210 = 3460/210 - 3460/210 simplified gives 346/21
- So, 80/5 + 20/42 = 346/21
In mixed form: 1610/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+40/42 80/10+20/42 80/5+20/84 80/5+60/42 80/15+20/42 80/25+20/42 80/35+20/42