Step-by-step explanation:
Hey there!!
[tex]27 \sqrt{x} - 3 \sqrt{x} \: is \: given[/tex]
Now,
As per surds solving method.
We simply simplify them.
[tex](27 - 3) \sqrt{x} [/tex]
{As they are like shurds.}
[tex]26 \sqrt{x} [/tex]
Is final answer.
Hope it helps...