Question

150/x - 154/x-0,5 =2 (lm on giúp tui vs tui đang cần gấp í)

Answer 1

x ≠ 0, x ≠ 1/2

\(\dfrac{150}{x}-\dfrac{154}{x-0,5}=2\\ \dfrac{150\left(x-0,5\right)-154x}{x\left(x-0,5\right)}=\dfrac{2x\left(x-0,5\right)}{x\left(x-0,5\right)}\\ \dfrac{150x-75-154x}{x\left(x-0,5\right)}=\dfrac{2x^2-x}{x\left(x-0,5\right)}\\ -4x-75=2x^2-x\\ -4x+x-2x^2-75=0\\ -3x-2x^2-75=0\)

pt vô no

 

Answer 2

\(\Leftrightarrow-\dfrac{4}{x}=2,5\Rightarrow x=-\dfrac{8}{5}\)