The correct expression will be -35x - 30y + 45
It should be noted that the expression is given as:
-5(7x+6y-9)
It should be noted that this can be done by opening the brackets.
This will be:
-5(7x+6y-9)
= -35x - 30y + 45
The mistake that Charlie made was that he didnt multiply others by -5.
Learn more about expressions on:
brainly.com/question/723406
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