a) x+3/2- y+2/3=-½ x+4y= 1 x+1½-y+2=-½ x=1-4y 1-4y+1½-y+2=-½ -5y=-5 y=1 x=1-4y=1-4*1=-3 y=1 x=-3 b) 2(x+3)- 3(y-2)= -4 3(x+y+2)= 2(2x+y+6) 2x+6-3y+6=-4 3x+3y+6=4x+2y+12 2x-3y=-16 -x+y=6 2x-3y=-16 y=6+x 2x-3(6+x)=-16 2x-18-3x=-16 -x=2 x=-2 y=6+(-2)=4 x=-2 y=4 c) (x-2)2+ 2y=(x-1)2 +y -1 2x=3y 2x-4+2y=2x-2+y-1 x=1½y 2*1½y-4+2y=2*1½y-2+y-1 3y+2y-3y-y=-2-1+4 y=1 x=1½y=1½*1=1½ y=1 x=1½
a) x+3/2- y+2/3=-1 /2 x+4y= 1/-4y x+3/2-y+2/3=-1/2 x=1-4y 1-4y+3/2-y+2/3=-1/2 x=1-4y 1-4y+9/6-y+4/6=-3/6 x=1-4y 2i1/6 -5y=-3/6 /-2i1/6 x=1-4y -5y=-2i4/6 /: -5 x=1-4y y=8/5 x=1-4y x=1- 4 × 8/5 y=8/5 x=3/5 y=8/5 b) 2(x+3)- 3(y-2)= -4 3(x+y+2)= 2(2x+y+6) 2x + 6 -3y+6=-4 3x+ 3y +6 = 4x + 2y + 12 2x + 12 -3y=-4 3x+ 3y +6 = 4x + 2y + 12/-2y 2x + 12 -3y=-4 3x+y+6=4x+12/-12 2x + 12 -3y=-4 3x+y-6=4x 2x + 12 -3y=-4 4x=3x+y-6 2x + 12 -3y=-4 sorry ale nie mam czasu skonczyc;/
