Add 42/40 and 80/30
1st number: 1 2/40, 2nd number: 2 20/30
42/40 + 80/30 is 223/60.
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,
80/30 = 80 × 4/30 × 4 = 320/120 - Add the two like fractions:
126/120 + 320/120 = 126 + 320/120 = 446/120 - 446/120 simplified gives 223/60
- So, 42/40 + 80/30 = 223/60
In mixed form: 343/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40+80/30 42/80+80/30 42/40+80/60 42/40+80/90