You're apparently expected to recognize that equation solution processes generally involve eliminating parentheses using the distributive property. When you do this, you get ...
... (-3)(2x) + (-3)(-3)
... = -6x +9
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<em>Comment on the question</em>
Depending on the inequaltiy, you may want to divide by -3 first in your solution process. The question seems to assume there is One Right Way. In math, there is not.
