Aflati x:
dau coroana si 15 puncte
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[tex] \frac{1}{3} x + 11.2 = x[/tex]
[tex]11.2 = x - \frac{1}{3} x[/tex]
[tex]11.2 = \frac{2x}{3} [/tex]
[tex]x = \frac{11.2 \times 3}{2} = \frac{33.6}{2} = 16.8[/tex]
Răspuns:
Salut
1/3 x+11,2=x
11,2=x-1/3x
11,2=2x/3
x=11,2•3/2=33,6/2=16,8.
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