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ex.3 va rog urgent!!!
Dau coroana!!!


Ex3 Va Rog UrgentDau Coroana class=

Răspuns :

((x-70)*3)-312=249
(x-70)*3=249+312
(x-70)*3=561
x-70=561:3
x-70=187
x=187+70
x=257.....=> Andrei s-a gandit la nr.257

((x+70):3)+312=401
(x+70):3=401-312
(x+70):3=89
x+70=89*3
x+70=267
x=267-70
x=197.........=> Alexandra s-a gandit la nr.197