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18:(x-4)=3 varog frumos

Răspuns :

18:(x-4)=3
18=3*(x-4)
18=3x-12
-3x=-12-18
3x=30
x=30:3
x=10


18:(x-4)=3
x-4=18:3
x-4=6
x=6+4
x=10
18:(10-4)=3