Add 12/40 and 42/60
12/40 + 42/60 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
42/60 = 42 × 2/60 × 2 = 84/120 - Add the two like fractions:
36/120 + 84/120 = 36 + 84/120 = 120/120 - 120/120 simplified gives 1/1
- So, 12/40 + 42/60 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+42/60 12/40+84/60 12/80+42/60 36/40+42/60 60/40+42/60 84/40+42/60