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afla nr necunoscut [(x-2):98+79]:8=10

Răspuns :

(x-2):98+79=80
(x-2):98=1
x-2=98
x=100
(x-2):98+79=10*8
(x-2):98+79=80
(x-2):98=80-79
(x-2):98=1
x-2=1*98
x-2=98
x=98+2
x=100