Add 45/42 and 80/28
1st number: 1 3/42, 2nd number: 2 24/28
45/42 + 80/28 is 55/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
80/28 = 80 × 3/28 × 3 = 240/84 - Add the two like fractions:
90/84 + 240/84 = 90 + 240/84 = 330/84 - 330/84 simplified gives 55/14
- So, 45/42 + 80/28 = 55/14
In mixed form: 313/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+80/28 45/84+80/28 45/42+80/56 45/42+80/84