Add 45/80 and 42/36
1st number: 45/80, 2nd number: 1 6/36
45/80 + 42/36 is 83/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
42/36 = 42 × 20/36 × 20 = 840/720 - Add the two like fractions:
405/720 + 840/720 = 405 + 840/720 = 1245/720 - 1245/720 simplified gives 83/48
- So, 45/80 + 42/36 = 83/48
In mixed form: 135/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+42/36 45/80+84/36 45/80+42/72