Add 40/21 and 9/27, Solve 1 19/21 + 9/27 as a fraction

Add 40/21 and 9/27

1^st number: 1 19/21, 2^nd number: 9/27

40/21 + 9/27 is 47/21.

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,
40/21 = 40 × 9/21 × 9 = 360/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
9/27 = 9 × 7/27 × 7 = 63/189
Add the two like fractions:
360/189 + 63/189 = 360 + 63/189 = 423/189
423/189 simplified gives 47/21
So, 40/21 + 9/27 = 47/21
In mixed form: 25/21

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