Add 30/84 and 21/18
1st number: 30/84, 2nd number: 1 3/18
30/84 + 21/18 is 32/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
21/18 = 21 × 14/18 × 14 = 294/252 - Add the two like fractions:
90/252 + 294/252 = 90 + 294/252 = 384/252 - 384/252 simplified gives 32/21
- So, 30/84 + 21/18 = 32/21
In mixed form: 111/21
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