Add 30/5 and 81/21
1st number: 6 0/5, 2nd number: 3 18/21
30/5 + 81/21 is 69/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
30/5 = 30 × 21/5 × 21 = 630/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
81/21 = 81 × 5/21 × 5 = 405/105 - Add the two like fractions:
630/105 + 405/105 = 630 + 405/105 = 1035/105 - 1035/105 simplified gives 69/7
- So, 30/5 + 81/21 = 69/7
In mixed form: 96/7
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