`(x/120 - 4) xx 150 = x`
`=> 5/4 x - 600 = x`
`=> 5/4 x - x = 600`
`=> 1/4 x = 600`
`=> x = 2400`
Vậy `x = 2400`
\(\left(\dfrac{x}{120}-4\right).150=x\)
\(\Rightarrow\dfrac{150}{120}x-600-x=0\)
\(\Rightarrow\dfrac{1}{4}x=600\)
\(\Rightarrow x=2400\)