" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
5=3x-y
5x-2y=7
y=-5+3x
5x-2(-5+3x)=7
y=-5+3x
5x+10-6x=7
y=-5+3x
x=3
y=-5+3*3
x=3
y=4
x=3
Metoda przeciwnych współczynników:
5=3x-y /*(-2)
5x-2y=7
-6x+2y=-10
5x-2y=7
------------
-x=-3
x=3
x=3
5=3*3-y
x=3
y=9-5
x=3
y=4
5x-2y=7
#metoda przeciwnych współczynników:
5=3x-y
5x-2y=7
3x-y=5/×(-2)
5x-2y=7
-6x+2y=-10
5x-2y=7
-x=-3/×(-1)
x=3
9-y=5
x=3
-y=-4/×(-1)
x=3
x=4
#metoda podstawiania
5=3x-y
5x-2y=7
-y=5-3x /× (-1)
5x-2y=7
y=-5+3x
5x-2(-5+3x)=7
y=-5+3x
5x+10-6x=7
y=-5+3x
-x=-3 / × (-1)
y=-5+3x
x=3
y=-5 + 9
x=3
y=4
x=3