Add 30/9 and 42/21
1st number: 3 3/9, 2nd number: 2 0/21
30/9 + 42/21 is 16/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
30/9 = 30 × 7/9 × 7 = 210/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
42/21 = 42 × 3/21 × 3 = 126/63 - Add the two like fractions:
210/63 + 126/63 = 210 + 126/63 = 336/63 - 336/63 simplified gives 16/3
- So, 30/9 + 42/21 = 16/3
In mixed form: 51/3
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