Add 5/80 and 42/45
5/80 + 42/45 is 239/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
42/45 = 42 × 16/45 × 16 = 672/720 - Add the two like fractions:
45/720 + 672/720 = 45 + 672/720 = 717/720 - 717/720 simplified gives 239/240
- So, 5/80 + 42/45 = 239/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80+42/45 5/80+84/45 5/80+42/90 15/80+42/45 25/80+42/45 35/80+42/45