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(85+25)•3+a=440 rezolvarea

Răspuns :

(85+25)x3+a=440
110x3+a=440
330+a=440
a=440-330
a=110
V: (85+25)x3+110=110x3+110=330+110=440
110•3+a=440 330+a=440 A=440-330 A=110