Answer :
Lets do this.
[tex] \frac{1}{2} *x-y=4[/tex] /-[tex] \frac{1}{2}x [/tex]
-y=[tex]- \frac{1}{2}x+4 [/tex] /*(-1)
y=[tex] \frac{1}{2}x-4[/tex] - its the result
2y=x+6 /:2 (divide both sides by2 )
y=[tex] \frac{1}{2} x+3[/tex] - its the result
[tex] \frac{1}{2} *x-y=4[/tex] /-[tex] \frac{1}{2}x [/tex]
-y=[tex]- \frac{1}{2}x+4 [/tex] /*(-1)
y=[tex] \frac{1}{2}x-4[/tex] - its the result
2y=x+6 /:2 (divide both sides by2 )
y=[tex] \frac{1}{2} x+3[/tex] - its the result