Add 40/70 and 2/12
40/70 + 2/12 is 31/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
40/70 = 40 × 6/70 × 6 = 240/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
2/12 = 2 × 35/12 × 35 = 70/420 - Add the two like fractions:
240/420 + 70/420 = 240 + 70/420 = 310/420 - 310/420 simplified gives 31/42
- So, 40/70 + 2/12 = 31/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+2/12 40/70+4/12 40/70+2/24 40/70+6/12 40/70+2/36 40/70+10/12 40/70+2/60 40/70+14/12 40/70+2/84