Question

7 phần x-6 bằng 2 phần x+2

Answer 1

\(\dfrac{7}{x-6}=\dfrac{2}{x+2}\left(x\ne6;x\ne-2\right)\)

suy ra

`7(x+2)=2(x-6)`

`<=>7x+14=2x-12`

`<=> 7x-2x=-12-14`

`<=> 5x=-26`

`<=> x=-26/5 (tm)`

Answer 2

\(\dfrac{7}{x-6}=\dfrac{2}{x+2}\left(dkxd:x\ne6;-2\right)\)

\(\Leftrightarrow7\left(x+2\right)=2\left(x-6\right)\)

\(\Leftrightarrow7x+14=2x-12\)

\(\Leftrightarrow5x=-26\)

\(\Leftrightarrow x=-\dfrac{26}{5}\left(tmdk\right)\)