Add 40/21 and 75/81, Solve 1 19/21 + 75/81 as a fraction

Add 40/21 and 75/81

1^st number: 1 19/21, 2^nd number: 75/81

40/21 + 75/81 is 535/189.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 21 × 27 = 567,
40/21 = 40 × 27/21 × 27 = 1080/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
75/81 = 75 × 7/81 × 7 = 525/567
Add the two like fractions:
1080/567 + 525/567 = 1080 + 525/567 = 1605/567
1605/567 simplified gives 535/189
So, 40/21 + 75/81 = 535/189
In mixed form: 2157/189

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