Add 21/6 and 7/90, Solve 3 3/6 + 7/90 as a fraction

Add 21/6 and 7/90

1^st number: 3 3/6, 2^nd number: 7/90

21/6 + 7/90 is 161/45.

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,
21/6 = 21 × 15/6 × 15 = 315/90
Likewise, for the 2nd fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90
Add the two like fractions:
315/90 + 7/90 = 315 + 7/90 = 322/90
322/90 simplified gives 161/45
So, 21/6 + 7/90 = 161/45
In mixed form: 326/45

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