Add 90/27 and 21/63, Solve 3 9/27 + 21/63 as a fraction

Add 90/27 and 21/63

1^st number: 3 9/27, 2^nd number: 21/63

90/27 + 21/63 is 11/3.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189
Likewise, for the 2nd fraction, since 63 × 3 = 189,
21/63 = 21 × 3/63 × 3 = 63/189
Add the two like fractions:
630/189 + 63/189 = 630 + 63/189 = 693/189
693/189 simplified gives 11/3
So, 90/27 + 21/63 = 11/3
In mixed form: 32/3

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