" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
{3x+y=5
{2x-y=0
{y=5-3x
{2x-(5-3x)=0
{y=5-3x
{2x-5+3x=0
{y=5-3x
{5x=5 /:5
{y=5-3*1
{x=1
{y=2
{x=1
b)
{2x-y=5
{x+y=4
{2x-(4-x)=5
{y=4-x
{2x-4+x=5
{y=4-x
{3x=9 /:3
{y=4-x
{x=3
{y=4-3
{x=3
{y=1
c)
{-x-y=-6 /*(-1)
{-x+y=2
{x+y=6
{-x+y=2
{x=6-y
{-(6-y)+y=2
{x=6-y
{-6+y+y=2
{x=6-y
{2y=8 /:2
{x=6-4
{y=4
{x=2
{y=4
{2x-y=0
{y=5-3x
{2x-y=0
{y=5-3x
{2x-5-3x=0
{y=5-3x
{-x-5=0 <--- przenosimy 5 na drugą stronę więc będzie {-x=5
{x=-5
y=5 - (-15)
y= (-20)
{x = -5
{y= -20
b) {2x-y=5
{x+y=4 / -y
{2x-y=5
{x=4-y
{2*(4-y) -y = 5
{x=4-y
{8-2y-y=5
{x=4-y
{8-3y=5 <----- 8 przenosimy na tą stronę, więc będzie -3
{x=4-y
{-3y=-3
{x=4-y
{y=1
{x=4-1
{y=1
{x=3
c) {-x-y=-6 / * (-1)
{-x+y=2
{x+y=6
{-x+y=2
{x=6-y
{-(6-y)+y=2
{x=6-y
{-6+y+y=2
{x=6-y
{2y=8
{x=6-4
{y=4
{x=2
{y=4
{2x-y=0
{y=5-3x
{2x-5-3x=0
{y=5-3x
{2x-3x=0+5
{y=5-3x
{-x=5
{y=5-3*(-5)
{x=-5
{y=20
{x=-5
b){2x-y=5
{x+y=4
{2*(4-y)-y=5
{x=4-y
{8-2y-y=5
{x=4-y
{-3y=-3
{x=4-y
{y=3
{x=4-3
{y=3
{x=1
c){-x-y=-6
{-x+y=2
{-x-y=-6
{y=2+x
{-x-(2+x)=-6
{y=2+x
{-x-2-x=-6
{y=2+x
{-2x=-4
{y=2+x
{x=2
{y=2+2
{x=2
{y=4