Add 80/21 and 84/63
1st number: 3 17/21, 2nd number: 1 21/63
80/21 + 84/63 is 36/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
80/21 = 80 × 3/21 × 3 = 240/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
84/63 = 84 × 1/63 × 1 = 84/63 - Add the two like fractions:
240/63 + 84/63 = 240 + 84/63 = 324/63 - 324/63 simplified gives 36/7
- So, 80/21 + 84/63 = 36/7
In mixed form: 51/7
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