\(\frac{3x-1}{40x-5}=\frac{25-3x}{5x-34}\)
\(\Leftrightarrow\left(3x-1\right).\left(5x-34\right)=\left(40x-5\right).\left(25-3x\right)\)
\(\Leftrightarrow15x^2-102x-5x+34=1000x-120x^2-125-15x\)
\(\Leftrightarrow15x^2-107x+34=985x-120x^2-125\)
Làm tiếp nha không bk đúng kh nữa