Add 21/3 and 20/45
1st number: 7 0/3, 2nd number: 20/45
21/3 + 20/45 is 67/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
21/3 = 21 × 15/3 × 15 = 315/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Add the two like fractions:
315/45 + 20/45 = 315 + 20/45 = 335/45 - 335/45 simplified gives 67/9
- So, 21/3 + 20/45 = 67/9
In mixed form: 74/9
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