Rozwiąż równania. a) 3x - 1 = 5x b) y - 3 = 9 - y c) 1/2z + 6 = z - 1
a) 3x-1=5x /-5x
3x-5x-1=0
-2x-1=0 /+1
-2x=1 /: -2
x=1/(-2)
x= - 1/2
b) y-3=9-y /-9-y
y+y-9-3=0
2y-12=0 /+12
2y=12 :2
y=12/2
y=6
c) 1/2z+6=z-1 /-z-1
1/2z-z+1+6=0
7-1/2z=0 /-7
- 1/2z= -7 /: - 1/2
z= -7/ w mianowniku (- 1/2)
z=14
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a) 3x-1=5x /-5x
3x-5x-1=0
-2x-1=0 /+1
-2x=1 /: -2
x=1/(-2)
x= - 1/2
b) y-3=9-y /-9-y
y+y-9-3=0
2y-12=0 /+12
2y=12 :2
y=12/2
y=6
c) 1/2z+6=z-1 /-z-1
1/2z-z+1+6=0
7-1/2z=0 /-7
- 1/2z= -7 /: - 1/2
z= -7/ w mianowniku (- 1/2)
z=14