Add 49/70 and 21/8
1st number: 49/70, 2nd number: 2 5/8
49/70 + 21/8 is 133/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
49/70 = 49 × 4/70 × 4 = 196/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
21/8 = 21 × 35/8 × 35 = 735/280 - Add the two like fractions:
196/280 + 735/280 = 196 + 735/280 = 931/280 - 931/280 simplified gives 133/40
- So, 49/70 + 21/8 = 133/40
In mixed form: 313/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+21/8 49/70+42/8 49/70+21/16 49/70+63/8 49/70+21/24 49/70+21/40 49/70+21/56