Add 42/8 and 54/5
1st number: 5 2/8, 2nd number: 10 4/5
42/8 + 54/5 is 321/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
42/8 = 42 × 5/8 × 5 = 210/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
54/5 = 54 × 8/5 × 8 = 432/40 - Add the two like fractions:
210/40 + 432/40 = 210 + 432/40 = 642/40 - 642/40 simplified gives 321/20
- So, 42/8 + 54/5 = 321/20
In mixed form: 161/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+54/5 42/16+54/5 42/8+54/10 42/24+54/5 42/8+54/15 42/40+54/5 42/8+54/25 42/56+54/5 42/8+54/35