Add 42/45 and 8/5
1st number: 42/45, 2nd number: 1 3/5
42/45 + 8/5 is 38/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
8/5 = 8 × 9/5 × 9 = 72/45 - Add the two like fractions:
42/45 + 72/45 = 42 + 72/45 = 114/45 - 114/45 simplified gives 38/15
- So, 42/45 + 8/5 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+8/5 42/45+16/5 42/90+8/5 42/45+8/10 42/45+24/5 42/45+8/15 42/45+40/5 42/45+8/25 42/45+56/5 42/45+8/35