Răspuns :

[tex]\bf 1-3(x-1)=-8[/tex]

[tex]\bf 1-3x+3=-8[/tex]

[tex]\bf -3x = -8 -4[/tex]

[tex]\bf -3x = -12\:\:\:|:(-3)[/tex]

[tex]\boxed{\bf x=4}[/tex]

1-3(x-1)= -8

1-3x+3= -8

-3x+4= -8

-3x= -8-4

-3x= -12

x= - 12:(-3)

x=4

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