Question

URGENT! Daca x=(-5/12):(-5/24)-[(-1/24)-(-5/36)-(-1/18)]x(1/36)^1, aflati inversul lui x

Answer 1

Răspuns: 288/577

Explicație pas cu pas:

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Answer 2

$\it x= \Big(-\dfrac{5}{12}\Big):\Big(-\dfrac{5}{24}\Big)-\Big[-\dfrac{1}{24}-\Big(-\dfrac{5}{36}\Big)- \Big(-\dfrac{1}{18}\Big)\Big]\cdot \Big(\dfrac{1}{36}\Big)^{-1}=\\ \\ \\ =\dfrac{5}{12}\cdot\dfrac{24}{5}-\Big(\dfrac{-3+10+4}{72}\Big)\cdot36 =2-\dfrac{11}{72}\cdot36=\ ^{2)}2-\dfrac{11}{2}=\dfrac{4-11}{2}=-\dfrac{7}{2} \\ \\ \\ x^{-1} =-\dfrac{2}{7}$