Add 42/5 and 18/80
1st number: 8 2/5, 2nd number: 18/80
42/5 + 18/80 is 69/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
42/5 = 42 × 16/5 × 16 = 672/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
18/80 = 18 × 1/80 × 1 = 18/80 - Add the two like fractions:
672/80 + 18/80 = 672 + 18/80 = 690/80 - 690/80 simplified gives 69/8
- So, 42/5 + 18/80 = 69/8
In mixed form: 85/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5+18/80 42/5+36/80 42/10+18/80 42/5+54/80 42/15+18/80 42/5+90/80 42/25+18/80 42/35+18/80