Add 18/5 and 36/21
1st number: 3 3/5, 2nd number: 1 15/21
18/5 + 36/21 is 186/35.
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,
18/5 = 18 × 21/5 × 21 = 378/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
36/21 = 36 × 5/21 × 5 = 180/105 - Add the two like fractions:
378/105 + 180/105 = 378 + 180/105 = 558/105 - 558/105 simplified gives 186/35
- So, 18/5 + 36/21 = 186/35
In mixed form: 511/35
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