Accepted Answer
[tex]6\sqrt7-5x\sqrt7-x\sqrt7=6\sqrt7-6x\sqrt7\\\\Answer:D.[/tex]
Suggested Answer
[tex]6\sqrt7 - 5x\sqrt7 - x\sqrt7=\\
6\sqrt7-6x\sqrt7 \Rightarrow D
[/tex]
[tex]6\sqrt7-5x\sqrt7-x\sqrt7=6\sqrt7-6x\sqrt7\\\\Answer:D.[/tex]
[tex]6\sqrt7 - 5x\sqrt7 - x\sqrt7=\\
6\sqrt7-6x\sqrt7 \Rightarrow D
[/tex]