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Rezolvati ecuatiile:2,4+3x=3,3;2(x+28)=112;4(7+5x)=248+2x

Răspuns :

2,4+3x=3,3
3x=0,9
x=0,3

2(x+28)=112
X+28=56
x=28

4(7+5x)=248+2x
28+20x=248+2x
18x=220
X=12,(2)

Sper ca te-am ajutat!