Add 42/8 and 27/30
1st number: 5 2/8, 2nd number: 27/30
42/8 + 27/30 is 123/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
42/8 = 42 × 15/8 × 15 = 630/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
27/30 = 27 × 4/30 × 4 = 108/120 - Add the two like fractions:
630/120 + 108/120 = 630 + 108/120 = 738/120 - 738/120 simplified gives 123/20
- So, 42/8 + 27/30 = 123/20
In mixed form: 63/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+27/30 42/8+54/30 42/16+27/30 42/8+27/60 42/8+81/30 42/24+27/30 42/8+27/90 42/40+27/30 42/56+27/30