vanhxeom03 vanhxeom03
  • 22-10-2022
  • Mathematics
contestada

cho biểu thức :
\frac{1}{b+a}[/tex] + [tex]\frac{1}{a+c}[/tex] =[tex]\frac{3}{a+b+c}[/tex] A=?

Respuesta :

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