Rozwiąż układ równań:
x/5 = 1-2y/5 -2(y-2)
x+1 = 2(1-y)
{x/5=1-2y/5 -2(y-2)
{x+1 = 2(1-y)
{x/5=1-2y/5 -2y+4
{x+1=2-2y
{x= -2y+1
{-2y+1/5=1-2y/5 -2y+4 /*5
{-2y+1=1-2y-10y+20
{-2y+1= -12y+21
{10y=20
{y=2
{x= -2*2+1
{x= -4+1
{x= -3
SPRAWDZENIE:
{x/5 = 1-2y/5 -2(y-2)
{-3/5 = 1-2*2/5 -2(2-2)
{-3+1 = 2(1-2)
{-3/5= -3/5-2*0
{-2=2*(-1)
{-3/5= -3/5
{-2= -2
WSZYSTKO SIĘ ZGADZA
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{x/5=1-2y/5 -2(y-2)
{x+1 = 2(1-y)
{x/5=1-2y/5 -2y+4
{x+1=2-2y
{x/5=1-2y/5 -2y+4
{x= -2y+1
{-2y+1/5=1-2y/5 -2y+4 /*5
{x= -2y+1
{-2y+1=1-2y-10y+20
{x= -2y+1
{-2y+1= -12y+21
{x= -2y+1
{10y=20
{x= -2y+1
{y=2
{x= -2*2+1
{y=2
{x= -4+1
{y=2
{x= -3
SPRAWDZENIE:
{x/5 = 1-2y/5 -2(y-2)
{x+1 = 2(1-y)
{-3/5 = 1-2*2/5 -2(2-2)
{-3+1 = 2(1-2)
{-3/5= -3/5-2*0
{-2=2*(-1)
{-3/5= -3/5
{-2= -2
WSZYSTKO SIĘ ZGADZA