Add 84/63 and 15/7
1st number: 1 21/63, 2nd number: 2 1/7
84/63 + 15/7 is 73/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
84/63 = 84 × 1/63 × 1 = 84/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
15/7 = 15 × 9/7 × 9 = 135/63 - Add the two like fractions:
84/63 + 135/63 = 84 + 135/63 = 219/63 - 219/63 simplified gives 73/21
- So, 84/63 + 15/7 = 73/21
In mixed form: 310/21
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