Add 18/9 and 42/84
1st number: 2 0/9, 2nd number: 42/84
18/9 + 42/84 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
18/9 = 18 × 28/9 × 28 = 504/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
42/84 = 42 × 3/84 × 3 = 126/252 - Add the two like fractions:
504/252 + 126/252 = 504 + 126/252 = 630/252 - 630/252 simplified gives 5/2
- So, 18/9 + 42/84 = 5/2
In mixed form: 21/2
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