Add 7/70 and 2/40
7/70 + 2/40 is 3/20.
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,
2/40 = 2 × 7/40 × 7 = 14/280 - Add the two like fractions:
28/280 + 14/280 = 28 + 14/280 = 42/280 - 42/280 simplified gives 3/20
- So, 7/70 + 2/40 = 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+2/40 7/70+4/40 7/70+2/80 21/70+2/40 7/70+6/40 35/70+2/40 7/70+10/40 49/70+2/40 7/70+14/40