Add 49/70 and 63/21
1st number: 49/70, 2nd number: 3 0/21
49/70 + 63/21 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
49/70 = 49 × 3/70 × 3 = 147/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
63/21 = 63 × 10/21 × 10 = 630/210 - Add the two like fractions:
147/210 + 630/210 = 147 + 630/210 = 777/210 - 777/210 simplified gives 37/10
- So, 49/70 + 63/21 = 37/10
In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+63/21 49/70+63/42