Add 12/40 and 8/7
1st number: 12/40, 2nd number: 1 1/7
12/40 + 8/7 is 101/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
8/7 = 8 × 40/7 × 40 = 320/280 - Add the two like fractions:
84/280 + 320/280 = 84 + 320/280 = 404/280 - 404/280 simplified gives 101/70
- So, 12/40 + 8/7 = 101/70
In mixed form: 131/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40+8/7 12/40+16/7 12/80+8/7 12/40+8/14 36/40+8/7 12/40+24/7 12/40+8/21 60/40+8/7 12/40+40/7 12/40+8/35 84/40+8/7 12/40+56/7 12/40+8/49