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x=6
bo 3*6-6=12
b)10=4-2x
x=7
bo 4-2*7=12
c)-6x+12=-6
x=3
bo -6*3+12=-6
myśle że pomogłem:D
Licze na naj
3x= 12+6
3x=18
x= 18/3=6
spr..
3*6-6=12
18-6=12
12=12
L=P
b) 10=4-2x
2x= 4-10
2x=-6
x= -6/2
x= -3
spr... 10= 4-2*(-3)
10= 4+6
10=10
L=P
c) -6x+12 =-6
-6x= -6-12
-6x= -18/*(-1)
6x= 18
x= 18/6
x=3
spr... -6*3+12=-6
-18+12=-6
-6=-6
L=P