In an arithmetic sequence, we find each term by adding the common difference to the previous term. In the given sequence, the first term is 18 and the common difference - 6. Therefore, to find the second term, we need to add - 6 to 18.
18+( - 6) ⟶12
We can continue with this pattern to find the third and fourth terms of the sequence.
18+( - 6) ⟶12+( - 6) ⟶6+( - 6) ⟶0
Therefore, the next three terms are 12, 6, and 0.
