Add 84/5 and 21/63
1st number: 16 4/5, 2nd number: 21/63
84/5 + 21/63 is 257/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 5 × 63 = 315,
84/5 = 84 × 63/5 × 63 = 5292/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Add the two like fractions:
5292/315 + 105/315 = 5292 + 105/315 = 5397/315 - 5397/315 simplified gives 257/15
- So, 84/5 + 21/63 = 257/15
In mixed form: 172/15
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