" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y=-4x+3
5x=4-2(-4x+3)
y=-4x=3
5x=4+8x-6
y=-4x+3
5x-8x=4-6
y=-4x=3
-3x=-2
y=-4x+3
x=2/3
y=-4x+3
x=2/3
y=-4*2/3+3
x=2/3
y=-8/3+3
x=2/3
y=-2 i 2/3 +3
x=2/3
y=1/3
4x+y=3
5x=4-2y
y=3-4x
5x=4-2(3-4x)
4x+y=3
5x=4-6-8x
4x+y=3
-3x=-2/:-3
4x+y=3
x=⅔
4*⅔+y=3
x=⅔
2⅔+y=3
x=⅔
y=⅓
b) 6x-3y=9
x+5y=-9,5
6x-3y=9
x=-9,5-5y
6(-9,5-5y)-3y=9
x=-9,5-5y
-57-30y-3y=9
x=-9,5-5y
-33y=33/-33
x=-9,5-5y
y=-2
x=-9,5-5*-2
y=2
x=-9,5+10
y=2
x=0,5
c) 2x-2y=7/:2
4x+3y=21
x=3,5+y
4(3,5+y)+3y=21
x=3,5+y
14+4y+3y=21
x=3,5+y
7y=7/:7
x=3,5+y
y=1
x=3,5+1
y=1
x=4,5
y=1
d) 0,4x+0,3y=1,4
0,1x+3y=2,3/*10
0,4x+0,3y=1,4
x=23-30y
0,4(23-30y)+0,3y=1,4
x=23-30y
9,2-12y+0,3y=1,4
x=23-30y
-11,7y=-8,3/:-11,7
x=23-30y
y=0,7
x=23-30*0,7
y=0,7
x=23-21
y=0,7
x=2
Nie jestem pewna ostatniego przykładu, ale mam nadzieję, że choć trochę pomogłam ; ))