A ) x - 1/2 = 3/1/ . 5/6

B ) x/5 = -3/14 . 7/3

C ) x + 2/3 = 9/15 . 5/27

D ) x : 4/11 = 11/4 . 2

1 câu trả lời

`a)`

`x - 1/2 = 3/1 . 5/6`

`x - 1/2 = 5/2`

`x = 5/2 + 1/2`

`x = 3`

`Vậy: x = 3`

`b)`

`x/5 = (-3)/14 . 7/3`

`x/5 = (-1)/2`

`=> x . 2 = -5`

`=> x = -5 : 2`

`=> x = (-5)/2`

`Vậy: x = (-5)/2`

`c)`

`x + 2/3 = 9/15 . 5/27`

`x + 2/3 = 1/9`

`x = 1/9 - 2/3`

`x = (-5)/9`

`Vậy: x = (-5)/9`

`d)`

`x : 4/11 = 11/4 . 2`

`x : 4/11 = 11/2`

`x = 11/2 . 4/11`

`x = 2`

`Vậy: x = 2`