Respuesta:
b= -1/5 ✔️
Explicación paso a paso:
[tex]\boldsymbol{Datos:}[/tex]
[tex]a.b = +4\\a= -20\\b= ?[/tex]
[tex]\boldsymbol{Reemplazamos:}[/tex]
[tex]-20.b = +4[/tex]
[tex]b= \frac{4}{-20}[/tex]
[tex]b= \frac{2}{-10}[/tex]
[tex]\boxed{\bf{b=-\frac{1}{5} }}[/tex] ✔️
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Respuesta:
b= -1/5 ✔️
Explicación paso a paso:
[tex]\boldsymbol{Datos:}[/tex]
[tex]a.b = +4\\a= -20\\b= ?[/tex]
[tex]\boldsymbol{Reemplazamos:}[/tex]
[tex]-20.b = +4[/tex]
[tex]b= \frac{4}{-20}[/tex]
[tex]b= \frac{2}{-10}[/tex]
[tex]\boxed{\bf{b=-\frac{1}{5} }}[/tex] ✔️