Rozwiąż podane układy równań metodą podstawiania.
A) x+4y=-2
3x-8y=10
B) 3x-2y=5
2x-y=4
C) 2x+3y=4
8x-5y=-1
a) x+4y=-2
x=-2-4y
3(-2-4y)-8y=10
-6-12y-8y=10
-20y=16 /-20
y=-16/20
x= -2 -4*-16/20
x=-2+16/5
x=1 i 1/3
y=2x-4
3x-2(2x-4)=5
3x-4x+8=5
-x=-3
x=3
y= 2x-4
y=2*3 -4
y=2
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) x+4y=-2
3x-8y=10
x=-2-4y
3(-2-4y)-8y=10
-6-12y-8y=10
-20y=16 /-20
y=-16/20
x= -2 -4*-16/20
x=-2+16/5
x=1 i 1/3
B) 3x-2y=5
2x-y=4
y=2x-4
3x-2(2x-4)=5
3x-4x+8=5
-x=-3
x=3
y= 2x-4
y=2*3 -4
y=2
C) 2x+3y=4
8x-5y=-1