Câu hỏi của Tom Gold Run

Question

√0,36 - |-0,75 | : (-1 và 3/4)1 - (5/9 - 2/3) mủ 2 : 4/27

⭐Hannie⭐ · Accepted Answer

$\sqrt{0,36}-\left|-0,75\right|:\left(-1\dfrac{3}{4}\right)\
=0,6-0,75:\dfrac{-7}{4}\
=\dfrac{3}{5}-\dfrac{3}{4}\cdot\dfrac{-4}{7}\
=\dfrac{3}{5}-\dfrac{-12}{28}\
=\dfrac{3}{5}+\dfrac{3}{7}\
=\dfrac{36}{35}$$1-\left(\dfrac{5}{9}-\dfrac{2}{3}\right)^2:\dfrac{4}{27}\
=1-\left(\dfrac{5}{9}-\dfrac{6}{9}\right)^2\cdot\dfrac{27}{4}\
=1-\left(-\dfrac{1}{9}\right)^2\cdot\dfrac{27}{4}\
=1-\dfrac{1}{81}\cdot\dfrac{27}{4}\
=1-\dfrac{1}{12}\
=\dfrac{11}{12}$Câu trả lời: $\sqrt{0,36}-\left|-0,75\right|:\left(-1\dfrac{3}{4}\right)\
=0,6-0,75:\dfrac{-7}{4}\
=\dfrac{3}{5}-\dfrac{3}{4}\cdot\dfrac{-4}{7}\
=\dfrac{3}{5}-\dfrac{-12}{28}\
=\dfrac{3}{5}+\dfrac{3}{7}\
=\dfrac{36}{35}$$1-\left(\dfrac{5}{9}-\dfrac{2}{3}\right)^2:\dfrac{4}{27}\
=1-\left(\dfrac{5}{9}-\dfrac{6}{9}\right)^2\cdot\dfrac{27}{4}\
=1-\left(-\dfrac{1}{9}\right)^2\cdot\dfrac{27}{4}\
=1-\dfrac{1}{81}\cdot\dfrac{27}{4}\
=1-\dfrac{1}{12}\
=\dfrac{11}{12}$

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