Add 2/21 and 81/18, Solve 2/21 + 4 9/18 as a fraction

Add 2/21 and 81/18

1^st number: 2/21, 2^nd number: 4 9/18

2/21 + 81/18 is 193/42.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
2/21 = 2 × 6/21 × 6 = 12/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126
Add the two like fractions:
12/126 + 567/126 = 12 + 567/126 = 579/126
579/126 simplified gives 193/42
So, 2/21 + 81/18 = 193/42
In mixed form: 425/42

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