Question

7-√3z+2=4

Answer 1

\[\LARGE 7-\sqrt{3z}+2=4\]
\[\LARGE -\sqrt{3z}=4-2-7 \]
multiply both sides by -1
and then square them ...
then you should be able to do it :)

Answer 2

ok?

Answer 3

-sqrt3z =-5
sqrt3z=5 - after squared both sides will get
3z=5
z=5/3