Add 20/6 and 15/90, Solve 3 2/6 + 15/90 as a fraction

Add 20/6 and 15/90

1^st number: 3 2/6, 2^nd number: 15/90

20/6 + 15/90 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 6 × 15 = 90,
20/6 = 20 × 15/6 × 15 = 300/90
Likewise, for the 2nd fraction, since 90 × 1 = 90,
15/90 = 15 × 1/90 × 1 = 15/90
Add the two like fractions:
300/90 + 15/90 = 300 + 15/90 = 315/90
315/90 simplified gives 7/2
So, 20/6 + 15/90 = 7/2
In mixed form: 31/2

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