Add 70/21 and 20/63
1st number: 3 7/21, 2nd number: 20/63
70/21 + 20/63 is 230/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Add the two like fractions:
210/63 + 20/63 = 210 + 20/63 = 230/63 - So, 70/21 + 20/63 = 230/63
In mixed form: 341/63
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