You can
put this solution on YOUR website!3-4z=-5+8z
First subtract 8z from both sides, than 3 from both sides;
3-4z-8z-3=-5+8z-8z-3
-4z-8z=-5-3
-12z=-8
Divide both sides by -12;

=

z=

Don't forget to check;
3-4(

)=-5+8(

)
3-

=-5+

-

=

+

=

Hope you understand
=)