Add 36/21 and 18/27, Solve 1 15/21 + 18/27 as a fraction

Add 36/21 and 18/27

1^st number: 1 15/21, 2^nd number: 18/27

36/21 + 18/27 is 50/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 21 × 9 = 189,
36/21 = 36 × 9/21 × 9 = 324/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189
Add the two like fractions:
324/189 + 126/189 = 324 + 126/189 = 450/189
450/189 simplified gives 50/21
So, 36/21 + 18/27 = 50/21
In mixed form: 28/21

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