Add 90/27 and 3/7, Solve 3 9/27 + 3/7 as a fraction

Add 90/27 and 3/7

1^st number: 3 9/27, 2^nd number: 3/7

90/27 + 3/7 is 79/21.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 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 7 × 27 = 189,
3/7 = 3 × 27/7 × 27 = 81/189
Add the two like fractions:
630/189 + 81/189 = 630 + 81/189 = 711/189
711/189 simplified gives 79/21
So, 90/27 + 3/7 = 79/21
In mixed form: 316/21

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