Add 18/21 and 40/24
1st number: 18/21, 2nd number: 1 16/24
18/21 + 40/24 is 53/21.
Steps for adding fractions
- 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,
18/21 = 18 × 8/21 × 8 = 144/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
40/24 = 40 × 7/24 × 7 = 280/168 - Add the two like fractions:
144/168 + 280/168 = 144 + 280/168 = 424/168 - 424/168 simplified gives 53/21
- So, 18/21 + 40/24 = 53/21
In mixed form: 211/21
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