Add 80/42 and 10/5
1st number: 1 38/42, 2nd number: 2 0/5
80/42 + 10/5 is 82/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
80/42 = 80 × 5/42 × 5 = 400/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
10/5 = 10 × 42/5 × 42 = 420/210 - Add the two like fractions:
400/210 + 420/210 = 400 + 420/210 = 820/210 - 820/210 simplified gives 82/21
- So, 80/42 + 10/5 = 82/21
In mixed form: 319/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/42+20/5 80/84+10/5 80/42+30/5 80/42+10/15 80/42+50/5 80/42+10/25 80/42+70/5 80/42+10/35