Add 24/21 and 9/18, Solve 1 3/21 + 9/18 as a fraction

Add 24/21 and 9/18

1^st number: 1 3/21, 2^nd number: 9/18

24/21 + 9/18 is 23/14.

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,
24/21 = 24 × 6/21 × 6 = 144/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
9/18 = 9 × 7/18 × 7 = 63/126
Add the two like fractions:
144/126 + 63/126 = 144 + 63/126 = 207/126
207/126 simplified gives 23/14
So, 24/21 + 9/18 = 23/14
In mixed form: 19/14

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