Add 42/75 and 3/80
42/75 + 3/80 is 239/400.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 75 × 16 = 1200,
42/75 = 42 × 16/75 × 16 = 672/1200 - Likewise, for the 2nd fraction, since 80 × 15 = 1200,
3/80 = 3 × 15/80 × 15 = 45/1200 - Add the two like fractions:
672/1200 + 45/1200 = 672 + 45/1200 = 717/1200 - 717/1200 simplified gives 239/400
- So, 42/75 + 3/80 = 239/400
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/75+3/80 42/75+6/80 42/75+9/80 42/75+15/80 42/75+21/80