Question

Tìm x: 

(x - 2) : 4 = (5 + x) : 3

mn giải chi tiết giúp em nha 

Answer 1

=>3(x-2)=4(x+5)

=>4x+20=3x-6

=>x=-26

Answer 2

\(\dfrac{x-2}{4}=\dfrac{5+x}{3}\\ =>3\times\left(x-2\right)=4\times\left(5+x\right)\\ =>3x-6=20+4x\\ =>3x-4x=20+6\\ =>-x=26\\ =>x=-26\)

Answer 3

`(x-2):4 = (5+x) :3`

`(x-2)*3 = 4*(5+x)`

`3x -6 = 20 +4x`

`3x -4x = 20 +6`

`-x =26`

`x=-26`

Answer 4

`(x-2):4 = (5+x) :3`

`(x-2)*3 = 4*(5+x)`

`3x -6 = 20 +4x`

`3x -4x = 20 +6`

`-x =26`

`x=26`

Answer 5

\(\left(x-2\right):4=\left(5+x\right):3\)

\(\Leftrightarrow\left(x-2\right).\dfrac{1}{4}=\left(5+x\right).\dfrac{1}{3}\)

\(\Leftrightarrow\dfrac{1}{4}x-\dfrac{1}{2}=\dfrac{1}{3}x+\dfrac{5}{3}\)

\(\Leftrightarrow\dfrac{1}{4}x-\dfrac{1}{3}x=\dfrac{5}{3}+\dfrac{1}{2}\)

\(\Leftrightarrow\dfrac{-1}{12}x=\dfrac{13}{6}\)

\(\Leftrightarrow x=\dfrac{13}{6}.\left(-12\right)\)

\(\Leftrightarrow x=-26\)