Question

Tình giá trị biểu thức :

\(\dfrac{7}{9}\) : \(\dfrac{14}{15}\) - \(\dfrac{1}{2}\) = 

Answer 1

Câu cuối cùng, em cảm ơn ag

Answer 2

\(\dfrac{7}{9}:\dfrac{14}{15}-\dfrac{1}{2}=\dfrac{5}{6}-\dfrac{1}{2}=\dfrac{5}{6}-\dfrac{3}{6}=\dfrac{2}{6}=\dfrac{1}{3}\)

Answer 3

`7/9:14/15-1/2=7/9xx15/14-1/2=5/6-1/2=5/6-3/6=2/6=1/3`

Answer 4

\(\dfrac{5}{6}\)-\(\dfrac{1}{2}\)=\(\dfrac{1}{3}\)

Answer 5

\(\left(\dfrac{7}{9}:\dfrac{14}{15}\right)-\dfrac{1}{2}=\left(\dfrac{7}{9}\times\dfrac{15}{14}\right)-\dfrac{1}{2}=\dfrac{105}{126}-\dfrac{1}{2}=\dfrac{5}{6}-\dfrac{1}{2}=\dfrac{5}{6}-\dfrac{3}{6}=\dfrac{2}{6}=\dfrac{1}{3}\)

Answer 6

\(\dfrac{7}{9}:\dfrac{14}{15}-\dfrac{1}{2}=\dfrac{7}{9}x\dfrac{15}{14}-\dfrac{1}{2}=\dfrac{105}{126}-\dfrac{1}{2}=\dfrac{105}{126}-\dfrac{63}{126}=\dfrac{42}{126}=\dfrac{1}{3}\)

Answer 7

`7/9 : 14/15 - 1/2`.

`= 7/9 xx 15/14 - 1/2`.

`= 5/6 - 1/2`.

`= 1/3`.