Answer
$(3, \frac{8}{3})$
Please see the graph.
Work Step by Step
$1/2*x-3/4*y=-1/2$
$1/8*x+3/4*y=19/8$
$1/2*x-3/4*y+1/8*x+3/4*y=-1/2+19/8$
$5/8*x = 15/8$
$5/8*x*8/5 = 15/8*8/5$
$x=3$
$1/2*x-3/4*y=-1/2$
$1/2*3-3/4*y=-1/2$
$3/2-3/4*y=-1/2$
$3/2-3/4*y-3/2=-1/2-3/2$
$-3/4*y = -2$
$-3/4*y*-4/3 = -2*-4/3$
$y = 8/3$
$1/2*x-3/4*y=-1/2$
$1/2*x-3/4*y+1/2+3/4*y=-1/2+1/2+3/4*y$
$1/2*x+1/2=3/4*y$
$4*(1/2*x+1/2)=3/4*y*4$
$2x+2=3y$
$(2x+2)/3=3y/3$
$2/3*x+2/3=y$
$1/8*x+3/4*y=19/8$
$1/8*x+3/4*(2/3*x+2/3)=19/8$
$1/8*x+1/2*x+1/2=19/8$
$5/8*x+1/2=19/8$
$8*(5/8*x+1/2=19/8)$
$5x+4=19$
$5x+4-4=19-4$
$5x=15$
$5x/5=15/5$
$x=3$
$2/3*x+2/3=y$
$2/3*3+2/3=y$
$2+2/3=y$
$8/3=y$