Question

tìm y biết:

15/12:y=(5/6-1/2).5/4

y:0,15=(2,8+0,38):0,75

Answer 1

* \(\dfrac{15}{12}:x=\left(\dfrac{5}{6}-\dfrac{1}{2}\right).\dfrac{5}{4}\)

\(\dfrac{15}{12}:x=\dfrac{1}{3}.\dfrac{5}{4}\)

\(\dfrac{15}{12}:x=\dfrac{5}{12}\)

\(x=\dfrac{15}{12}:\dfrac{5}{12}\)

\(x=3\)

* \(y:0,15=\left(2,8+0,38\right):0,75\)

\(y:0,15=3,18:0,75\)

\(y:15=4,24\)

\(y=4,24.15\)

\(y=63,6\)

Answer 2

ko biết đau kho quá

Answer 3

15/12 : y = ( 5/6 - 1/2 ) . 5/4 y : 0,15 = (2,8 + 0,38) : 0,75

15/12 : y = 1/3 . 5/4 y : 0,15 = 3,18 : 0,75

15/12 : y = 5/12 y : 0,15 = 4,24

y = 15/12 : 5/12 y = 4,24 . 0,15

y = 3 y = 0,636

Answer 4

quên chưa cách kết quả là :

+ 15/12 : y = ( 5/6 - 1/2 ) . 5/4 = 3

+ y : 0,15 = (2,8 + 0,38 ) : 0,75 = 0,636