Add 9/7 and 12/40
1st number: 1 2/7, 2nd number: 12/40
9/7 + 12/40 is 111/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
9/7 = 9 × 40/7 × 40 = 360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Add the two like fractions:
360/280 + 84/280 = 360 + 84/280 = 444/280 - 444/280 simplified gives 111/70
- So, 9/7 + 12/40 = 111/70
In mixed form: 141/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+12/40 9/7+24/40 9/14+12/40 9/7+12/80 27/7+12/40 9/7+36/40 9/21+12/40 45/7+12/40 9/7+60/40 9/35+12/40 63/7+12/40 9/7+84/40 9/49+12/40