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1.rezolvati in multimea numerelor intregi ecuatile a)4(x-2)+5=2x+9
b)3(2x-1)-7=4x+6
c)9x-16-2(3x-5+13=5(2x-7)-3(3x-8)
2.Rezolvati in multimea numerelor naturale inecuatiile
a)3(x-5)+7<2(x+2)-9
b)2(2x-3)+9<3(x-2)+13
DAU COROANA,E URGENT