Question

z+6/3=2z/4

Answer 1

i did 3*2z=z+6*4
i took away z from the right side and now im stuck with 3z=6*4

Answer 2

Hmm..
\[\frac{ z+6 }{ 3 }=\frac{ 2z }{ y }\]
Use cross multiplication;
\[y(2+6)=3(2z)\]
Division reverses multiplication;
\[\frac{ y(z+6) }{ z+6 }=\frac{ 3(2z) }{ z+6 }\]
\[y=\frac{ 6z }{ z+6 }\]

Answer 3

z = -4

Answer 4

Oh you've changed it to (z+6)/3 = 2z/y in which case z = -(6y)/(y-6)