Add 42/12 and 35/40
1st number: 3 6/12, 2nd number: 35/40
42/12 + 35/40 is 35/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
42/12 = 42 × 10/12 × 10 = 420/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
35/40 = 35 × 3/40 × 3 = 105/120 - Add the two like fractions:
420/120 + 105/120 = 420 + 105/120 = 525/120 - 525/120 simplified gives 35/8
- So, 42/12 + 35/40 = 35/8
In mixed form: 43/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+35/40 42/12+70/40 42/24+35/40 42/12+35/80 42/36+35/40 42/60+35/40 42/84+35/40