Question

please answer this question

Answer 1

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Answer 2

$\frac{Solution}{}$

$= [ \frac{4}{3} - \frac{4}{1} ] {}^{ - 1} \\ \\ = [ \frac{4 - 12}{3} ] {}^{ - 1} \\ \\ = [ \frac{ -8}{3} ] { }^{ - 1} \\ \\ = \frac{ - 3}{8}$