Add 21/70 and 2/10
21/70 + 2/10 is 1/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
2/10 = 2 × 7/10 × 7 = 14/70 - Add the two like fractions:
21/70 + 14/70 = 21 + 14/70 = 35/70 - 35/70 simplified gives 1/2
- So, 21/70 + 2/10 = 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+2/10 21/70+4/10 21/70+2/20 63/70+2/10 21/70+6/10 21/70+2/30 21/70+2/50 21/70+14/10 21/70+2/70