Câu hỏi của Nguyễn Phương Thảo

Question

(4/17-7/20):(5/18+11/12)

làm nhanh giùm mình nha

ILoveMath · Accepted Answer

$\left(\dfrac{4}{17}-\dfrac{7}{20}\right):\left(\dfrac{5}{18}+\dfrac{11}{12}\right)$

$=\left(\dfrac{80}{340}-\dfrac{119}{340}\right):\left(\dfrac{10}{36}+\dfrac{33}{36}\right)$

$=\dfrac{-39}{340}:\dfrac{43}{36}$

$=\dfrac{-39}{340}.\dfrac{36}{43}$

$=\dfrac{-351}{3655}$

Câu trả lời:

$\left(\dfrac{4}{17}-\dfrac{7}{20}\right):\left(\dfrac{5}{18}+\dfrac{11}{12}\right)$

$=\left(\dfrac{80}{340}-\dfrac{119}{340}\right):\left(\dfrac{10}{36}+\dfrac{33}{36}\right)$

$=\dfrac{-39}{340}:\dfrac{43}{36}$

$=\dfrac{-39}{340}.\dfrac{36}{43}$

$=\dfrac{-351}{3655}$