Add 7/84 and 84/63
1st number: 7/84, 2nd number: 1 21/63
7/84 + 84/63 is 17/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
7/84 = 7 × 3/84 × 3 = 21/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
84/63 = 84 × 4/63 × 4 = 336/252 - Add the two like fractions:
21/252 + 336/252 = 21 + 336/252 = 357/252 - 357/252 simplified gives 17/12
- So, 7/84 + 84/63 = 17/12
In mixed form: 15/12
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