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Cine ma poate ajuta (30×X+6):4=84

Răspuns :

(30×X+6):4=84
30×X+6=84×4
30×X+6=336
30×X=336-6
30×X=330
X=330:30=11
(30*x+6):4=84
30*x+6=84*4
30*x+6=336-6
30*x=330:30
x=11