Add 7/70 and 64/40
1st number: 7/70, 2nd number: 1 24/40
7/70 + 64/40 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
7/70 = 7 × 4/70 × 4 = 28/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
64/40 = 64 × 7/40 × 7 = 448/280 - Add the two like fractions:
28/280 + 448/280 = 28 + 448/280 = 476/280 - 476/280 simplified gives 17/10
- So, 7/70 + 64/40 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+64/40 7/70+64/80 21/70+64/40 35/70+64/40 49/70+64/40