Answer:
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We effectively rewrite the equation as

In order for the LHS to be defined, we need to restrict
, or
. Now, the LHS will vanish when the numerator is 0, which happens for

This value is indeed smaller than 4, so the solution is
.
Answer and Explanation: The answer is in the 1st image, and the explanation is in the 2nd image.
Answer:
-32r-12
Step-by-step explanation:
Solve by distributing the -4 (multiplying -4 by the numbers in parentheses)