Câu hỏi của Như ngọc

Question

Tình giá trị biểu thức (6/7+3/14):3/7x1/70

HT.Phong (9A5) · Accepted Answer

$\left(\dfrac{6}{7}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\left(\dfrac{12}{14}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\dfrac{15}{14}:\dfrac{3}{7}\times\dfrac{1}{70}$

$=\dfrac{15}{14}\times\dfrac{7}{3}\times\dfrac{1}{70}$

$=\dfrac{15\times7\times1}{14\times3\times70}$

$=\dfrac{105}{2940}=\dfrac{1}{28}$

Câu trả lời:

$\left(\dfrac{6}{7}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\left(\dfrac{12}{14}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\dfrac{15}{14}:\dfrac{3}{7}\times\dfrac{1}{70}$

$=\dfrac{15}{14}\times\dfrac{7}{3}\times\dfrac{1}{70}$

$=\dfrac{15\times7\times1}{14\times3\times70}$

$=\dfrac{105}{2940}=\dfrac{1}{28}$

Ng.T · Answer

$\left(\dfrac{6}{7}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\left(\dfrac{12}{14}+\dfrac{3}{14}\right)\times\dfrac{7}{3}\times\dfrac{1}{70}$

$=\dfrac{15}{14}\times\dfrac{1}{30}$

$=\dfrac{1}{28}$

Câu trả lời:

$\left(\dfrac{6}{7}+\dfrac{3}{14}\right):\dfrac{3}{7}\times\dfrac{1}{70}$

$=\left(\dfrac{12}{14}+\dfrac{3}{14}\right)\times\dfrac{7}{3}\times\dfrac{1}{70}$

$=\dfrac{15}{14}\times\dfrac{1}{30}$

$=\dfrac{1}{28}$