Tìm x a, `-2/3x=4/15` b, `2“1/3x=-7/26` c, `-7/19x=-13/24` 01/07/2021 Bởi Harper Tìm x a, `-2/3x=4/15` b, `2“1/3x=-7/26` c, `-7/19x=-13/24`
Đáp án + Giải thích các bước giải: `a) -2/3 x = 4/15` `x = 4/15 : (-2/3)` `x = -2/5` `b) 2 1/3 x = -7/26` `7/3 x = -7/26 ` `x = -3/26` `c) -7/19 x = -13/24` `x = -13/24 : -7/19` `x = 247/168` Bình luận
a) ` – 2/3 x =4/15` ` x=4/15 : -2/3` ` x=4/15 . -3/2` `x=-12/30` `x=-2/5` $Vậy………..$ b) `2 1/3 x = – 7/26 ` `x = – 7/26 : 2 1/3` `x = -7/26 : 7/3` `x = -7/26 . 3/7` `x = -3/26` $Vậy….$ c)`- 7/19 x = -13/24` ` x = -13/24 : -7/19` `x = -13/24 . -19/7` `x = 247/168` $Vậy…..$ Bình luận
Đáp án + Giải thích các bước giải:
`a) -2/3 x = 4/15`
`x = 4/15 : (-2/3)`
`x = -2/5`
`b) 2 1/3 x = -7/26`
`7/3 x = -7/26 `
`x = -3/26`
`c) -7/19 x = -13/24`
`x = -13/24 : -7/19`
`x = 247/168`
a) ` – 2/3 x =4/15`
` x=4/15 : -2/3`
` x=4/15 . -3/2`
`x=-12/30`
`x=-2/5`
$Vậy………..$
b) `2 1/3 x = – 7/26 `
`x = – 7/26 : 2 1/3`
`x = -7/26 : 7/3`
`x = -7/26 . 3/7`
`x = -3/26`
$Vậy….$
c)`- 7/19 x = -13/24`
` x = -13/24 : -7/19`
`x = -13/24 . -19/7`
`x = 247/168`
$Vậy…..$