Add 15/90 and 21/3
1st number: 15/90, 2nd number: 7 0/3
15/90 + 21/3 is 43/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 3 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90 - Likewise, for the 2nd fraction, since 3 × 30 = 90,
21/3 = 21 × 30/3 × 30 = 630/90 - Add the two like fractions:
15/90 + 630/90 = 15 + 630/90 = 645/90 - 645/90 simplified gives 43/6
- So, 15/90 + 21/3 = 43/6
In mixed form: 71/6
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