Question

x-4/x+3 = 4/5

Answer 1

Giải `!`

`(x-4)/(x+3) =4/5`

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

`=> 5x-20=4x+12`

`=> 5x-4x=12+20`

`=> x= 32`

Vậy `x=32`

Answer 2

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

\(\Rightarrow5\left(x-4\right)=4\left(x+3\right)\)

\(\Rightarrow5x-20=4x+12\)

\(\Rightarrow5x-4x=12+32\)

\(\Rightarrow x=32\)