Question

tìm số tự nhiên x

\(\frac{x-2}{255}=\frac{144}{153}\)

Answer 1

=> (x-2)x 153= 144x 255

<=> (x-2). 153= 36720

<=> x-2 = 240

<=> x= 242

Answer 2

\(Vi`\frac{x-2}{255}=\frac{144}{153}\)

\(\Rightarrow\left(x-2\right)153=144.255\)

\(\Rightarrow\left(x-2\right)153=36720\)

        \(\Rightarrow\left(x-2\right)=240\)

                      \(\Rightarrow x=242\)