Aflati x din proportia x+3/x = 25/23
dau coroana
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Răspuns:
x = 34,5
Explicație pas cu pas:
[tex]\frac{x+3}{x}=\frac{25}{23}[/tex]
[tex]23(x+3)=25x[/tex]
[tex]23x+69=25x[/tex]
[tex]23x-25x=-69[/tex]
[tex]-2x=-69[/tex]
[tex]x=\frac{-69}{-2} =)x=\frac{69}{2}[/tex]
[tex]x=34,5[/tex]