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Rezolvati in multimea numerelor naturale ecuatiile:
A) 2x+23=3×7+5;
B) 3x+5+5x+6=35
C) 11x+5-7x-9=2×10+1
D) 7x+5-5x-7=2la puterea 0+2la puterea1+2la puterea2+1