Add 12/8 and 40/70
1st number: 1 4/8, 2nd number: 40/70
12/8 + 40/70 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
12/8 = 12 × 35/8 × 35 = 420/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
40/70 = 40 × 4/70 × 4 = 160/280 - Add the two like fractions:
420/280 + 160/280 = 420 + 160/280 = 580/280 - 580/280 simplified gives 29/14
- So, 12/8 + 40/70 = 29/14
In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+40/70 12/8+80/70 12/16+40/70 36/8+40/70 12/24+40/70 60/8+40/70 12/40+40/70 84/8+40/70 12/56+40/70