Add 42/40 and 42/30
1st number: 1 2/40, 2nd number: 1 12/30
42/40 + 42/30 is 49/20.
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,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
42/30 = 42 × 4/30 × 4 = 168/120 - Add the two like fractions:
126/120 + 168/120 = 126 + 168/120 = 294/120 - 294/120 simplified gives 49/20
- So, 42/40 + 42/30 = 49/20
In mixed form: 29/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+42/30 42/40+84/30 42/80+42/30 42/40+42/60 42/40+42/90