Add 84/15 and 21/30
1st number: 5 9/15, 2nd number: 21/30
84/15 + 21/30 is 63/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
84/15 = 84 × 2/15 × 2 = 168/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Add the two like fractions:
168/30 + 21/30 = 168 + 21/30 = 189/30 - 189/30 simplified gives 63/10
- So, 84/15 + 21/30 = 63/10
In mixed form: 63/10
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