Add 12/84 and 42/9
1st number: 12/84, 2nd number: 4 6/9
12/84 + 42/9 is 101/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
12/84 = 12 × 3/84 × 3 = 36/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
42/9 = 42 × 28/9 × 28 = 1176/252 - Add the two like fractions:
36/252 + 1176/252 = 36 + 1176/252 = 1212/252 - 1212/252 simplified gives 101/21
- So, 12/84 + 42/9 = 101/21
In mixed form: 417/21
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