Add 21/6 and 90/15
1st number: 3 3/6, 2nd number: 6 0/15
21/6 + 90/15 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
21/6 = 21 × 5/6 × 5 = 105/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
90/15 = 90 × 2/15 × 2 = 180/30 - Add the two like fractions:
105/30 + 180/30 = 105 + 180/30 = 285/30 - 285/30 simplified gives 19/2
- So, 21/6 + 90/15 = 19/2
In mixed form: 91/2
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