Add 5/42 and 80/45
1st number: 5/42, 2nd number: 1 35/45
5/42 + 80/45 is 239/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
5/42 = 5 × 15/42 × 15 = 75/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
80/45 = 80 × 14/45 × 14 = 1120/630 - Add the two like fractions:
75/630 + 1120/630 = 75 + 1120/630 = 1195/630 - 1195/630 simplified gives 239/126
- So, 5/42 + 80/45 = 239/126
In mixed form: 1113/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+80/45 5/84+80/45 5/42+80/90 15/42+80/45 25/42+80/45 35/42+80/45