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4x : 2 - y+4 :3 = ½
4x - y = ½ *2 -4 *3
4x - y = - 6
-2(y+x)+1=1
-2y - 2x +1 = 1
-2(y+x)+1=1
3(x+4)+2(y-4)=6/2
-2y-2x=1-1
3x+12+2y-8=3
-2y-2x=0
3x+2y=3-4
-2y=2x /-2
3x+2y=-1
y=-x
3x+2(-x)=-1
3x-2x=-1
x=-1
y=-x=1
x=-1
y=1
Spr.
(x+4):2 + (y-4):3 = ½
(-1+4):2+(1-4):3=3:2-3:3=3/2-1=1/2
pozdrawiam:)