Add 5/40 and 42/30
1st number: 5/40, 2nd number: 1 12/30
5/40 + 42/30 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
5/40 = 5 × 3/40 × 3 = 15/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
42/30 = 42 × 4/30 × 4 = 168/120 - Add the two like fractions:
15/120 + 168/120 = 15 + 168/120 = 183/120 - 183/120 simplified gives 61/40
- So, 5/40 + 42/30 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+42/30 5/40+84/30 5/80+42/30 5/40+42/60 15/40+42/30 5/40+42/90 25/40+42/30 35/40+42/30