Question 15550
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;
{{{-12z/12}}}={{{-8/-12}}}
z={{{2/3}}}
Don't forget to check;
3-4({{{2/3}}})=-5+8({{{2/3}}})
3-{{{8/3}}}=-5+{{{16/3}}}
{{{9/3}}}-{{{-8/3}}}={{{-15/3}}}+{{{16/3}}}
{{{1/3}}}={{{1/3}}}
Hope you understand
=)