\(\Leftrightarrow x-9-2x+6=0\)
\(\Leftrightarrow-x-3=0\)
\(\Leftrightarrow x=-3\)
#quankun^^
\(x-9=2x-6\)
\(\Leftrightarrow x-2x=-6+9\)
\(\Leftrightarrow-x=3\)
\(\Leftrightarrow x=3\)
Trả lời:
\(x-9\)\(=\)\(2x-6\)
\(x-9-2x+6=0\)
\(-x=3\)
\(x=-3\)
Vậy\(x=-3\)
Hok tốt!
Vuong Dong Yet