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rezolvati in multimea numerelor rationale ecuatia: 0,6x -2 intreg 1/5 = -4,48
dau coroana


Răspuns :

=
0,6x-11/5=-4,48
0,6x-2,2=-4,48
0,6x=2,2-4,48
0,6x=-2,28
x=-2,28:0,6
x=-3,8
[tex]0.6x - 2 \frac{1}{5} = - 4.48[/tex]

[tex] \frac{6x}{10} - \frac{2 \times 5 + 1}{5} = - \frac{448}{100} [/tex]

[tex] \frac{3x}{5} - \frac{11}{5} = - \frac{224}{50} [/tex]

[tex] \frac{3x}{5} - \frac{11}{5} = - \frac{112}{25} [/tex]

[tex] \frac{15x}{25} - \frac{55}{25} = - \frac{112}{25} [/tex]

[tex]15x - 55 = - 112[/tex]

[tex]15x = - 112 + 55[/tex]

[tex]15x = - 57[/tex]

[tex]x = - \frac{57}{15} [/tex]

[tex]x = - \frac{19}{5} [/tex]