Add 21/70 and 20/3
1st number: 21/70, 2nd number: 6 2/3
21/70 + 20/3 is 209/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
20/3 = 20 × 70/3 × 70 = 1400/210 - Add the two like fractions:
63/210 + 1400/210 = 63 + 1400/210 = 1463/210 - 1463/210 simplified gives 209/30
- So, 21/70 + 20/3 = 209/30
In mixed form: 629/30
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