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4x-0,(3)=3+x ajutatima

Răspuns :

4x-3/9=3+x
4x-3=3+x
4x-x=3+3
3x=9
x=3 
4x-0,(3)=3+x=>4x-3/9=3+x=>4x-1/3=3+x|*3=>12x-1=9+3x=>12x-3x=9+1=>9x=10=>x=10/9=1,(1)