Add 3/40 and 70/7
1st number: 3/40, 2nd number: 10 0/7
3/40 + 70/7 is 403/40.
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,
3/40 = 3 × 7/40 × 7 = 21/280 - Likewise, for the 2nd fraction, since 7 × 40 = 280,
70/7 = 70 × 40/7 × 40 = 2800/280 - Add the two like fractions:
21/280 + 2800/280 = 21 + 2800/280 = 2821/280 - 2821/280 simplified gives 403/40
- So, 3/40 + 70/7 = 403/40
In mixed form: 103/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40+70/7 3/80+70/7 3/40+70/14 9/40+70/7 3/40+70/21 15/40+70/7 3/40+70/35 21/40+70/7 3/40+70/49