The appropriate words to fill each blank as required in the task content are; -3, -4 and {-4} respectively.
It follows from the task content that the numbers which can be used to fill in each of blanks are as follows;
a). To solve the equation, we must divide each side of the equation by; -3.
b). Performing this operation gives the equation X= -4.
C). When the solution is written in solution set notation, it is written as; {-4}.
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