Add 5/42 and 48/45
1st number: 5/42, 2nd number: 1 3/45
5/42 + 48/45 is 83/70.
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,
48/45 = 48 × 14/45 × 14 = 672/630 - Add the two like fractions:
75/630 + 672/630 = 75 + 672/630 = 747/630 - 747/630 simplified gives 83/70
- So, 5/42 + 48/45 = 83/70
In mixed form: 113/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+48/45 5/42+96/45 5/84+48/45 5/42+48/90 15/42+48/45 25/42+48/45 35/42+48/45