Question

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Answer 1

Answer:

Step-by-step explanation:

$(\frac{1}{2} +\frac{1}{3} +\frac{1}{4} )^{-2}$

$(\frac{6+4+3}{12})^{-2}$

$(\frac{13}{12} )^{-2}$

$(\frac{12}{13}) ^{2}$

Answer 2

Step-by-step explanation:

hyy here is your answer