tìm x: x -3/5 . x-7/3=-5/6

2 câu trả lời

`x-3/5 . x-7/3=-5/6`

`<=> x-3/5 . x=-5/6+7/3`

`<=> x-3/5 . x=-5/6+14/6`

`<=> x-3/5 . x=9/6`

`<=> x-3/5 . x=3/2`

`<=> x . (1-3/5)=3/2`

`<=> x . (5/5-3/5)=3/2`

`<=> x . 2/5=3/2`

`<=> x=3/2:2/5`

`<=> x=3/2 . 5/2`

`<=> x=15/4`

Vậy `x=15/4`

 

`x - 3/5. x - 7/3 = -5/6`

`=> ( 1 - 3/5 ). x = -5/6 + 7/3`

`=> 2/5. x = 3/2`

`=> x = 3/2 : 2/5`

`=> x = 15/4`

 $Vậy$ `x = 15/4`