Add 70/40 and 7/8
1st number: 1 30/40, 2nd number: 7/8
70/40 + 7/8 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
70/40 = 70 × 1/40 × 1 = 70/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
7/8 = 7 × 5/8 × 5 = 35/40 - Add the two like fractions:
70/40 + 35/40 = 70 + 35/40 = 105/40 - 105/40 simplified gives 21/8
- So, 70/40 + 7/8 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+14/8 70/80+7/8 70/40+7/16 70/40+21/8 70/40+7/24 70/40+35/8 70/40+7/40 70/40+49/8 70/40+7/56