Add 63/35 and 70/40
1st number: 1 28/35, 2nd number: 1 30/40
63/35 + 70/40 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
63/35 = 63 × 8/35 × 8 = 504/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
70/40 = 70 × 7/40 × 7 = 490/280 - Add the two like fractions:
504/280 + 490/280 = 504 + 490/280 = 994/280 - 994/280 simplified gives 71/20
- So, 63/35 + 70/40 = 71/20
In mixed form: 311/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70+70/40 63/35+70/80