Add 42/63 and 80/42
1st number: 42/63, 2nd number: 1 38/42
42/63 + 80/42 is 18/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
42/63 = 42 × 2/63 × 2 = 84/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Add the two like fractions:
84/126 + 240/126 = 84 + 240/126 = 324/126 - 324/126 simplified gives 18/7
- So, 42/63 + 80/42 = 18/7
In mixed form: 24/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+80/42 42/63+80/84