Add 81/21 and 70/24, Solve 3 18/21 + 2 22/24 as a fraction

Add 81/21 and 70/24

1^st number: 3 18/21, 2^nd number: 2 22/24

81/21 + 70/24 is 569/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
81/21 = 81 × 8/21 × 8 = 648/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
70/24 = 70 × 7/24 × 7 = 490/168
Add the two like fractions:
648/168 + 490/168 = 648 + 490/168 = 1138/168
1138/168 simplified gives 569/84
So, 81/21 + 70/24 = 569/84
In mixed form: 665/84

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