" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
{x+2y=5 |*(-1)
{4x+2y=10
{-x-2y=-5
_____________
3x=5
x=5/3
4*5/3+2y=10
2y=(10*3)/20
y=3/4
{3(x+y)-2(y+3)=y+3(x-2)
{x-2y=5
{3x+3y-2y-6=y+3x-6
{x-2y=5
{3x+3y-2y-y-3x=-6+6
{x-2y=5
{0
{x-2y=5
trzeciego przykładu nie umiem zrobić