Add 12/27 and 70/21, Solve 12/27 + 3 7/21 as a fraction

Add 12/27 and 70/21

1^st number: 12/27, 2^nd number: 3 7/21

12/27 + 70/21 is 34/9.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 27 × 7 = 189,
12/27 = 12 × 7/27 × 7 = 84/189
Likewise, for the 2nd fraction, since 21 × 9 = 189,
70/21 = 70 × 9/21 × 9 = 630/189
Add the two like fractions:
84/189 + 630/189 = 84 + 630/189 = 714/189
714/189 simplified gives 34/9
So, 12/27 + 70/21 = 34/9
In mixed form: 37/9

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