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1)10x-1,2=x(1,4plus5).


ps am scris plus ca nu am gasit semnul plus

2)4supra3x-2=1supra3(xplus4)


ps aceasi problema ca la prima :)

4)4xplus4<12plus2x


Răspuns :

10x - 1.4x =1.2+5 8.6x=6.2 x=6.2:8.6