Add 45/3 and 20/21
1st number: 15 0/3, 2nd number: 20/21
45/3 + 20/21 is 335/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
45/3 = 45 × 7/3 × 7 = 315/21 - Likewise, for the 2nd fraction, since 21 × 1 = 21,
20/21 = 20 × 1/21 × 1 = 20/21 - Add the two like fractions:
315/21 + 20/21 = 315 + 20/21 = 335/21 - So, 45/3 + 20/21 = 335/21
In mixed form: 1520/21
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