Add 18/24 and 18/21
18/24 + 18/21 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
18/24 = 18 × 7/24 × 7 = 126/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
18/21 = 18 × 8/21 × 8 = 144/168 - Add the two like fractions:
126/168 + 144/168 = 126 + 144/168 = 270/168 - 270/168 simplified gives 45/28
- So, 18/24 + 18/21 = 45/28
In mixed form: 117/28
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