Add 10/45 and 42/80
10/45 + 42/80 is 269/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
10/45 = 10 × 16/45 × 16 = 160/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
160/720 + 378/720 = 160 + 378/720 = 538/720 - 538/720 simplified gives 269/360
- So, 10/45 + 42/80 = 269/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+42/80 10/45+84/80 10/90+42/80 30/45+42/80 50/45+42/80 70/45+42/80