Respuesta:
En el paso a paso
Explicación paso a paso:
-6x + 10y = -20
12x - 7y = -67
Despejando en cada una la variable :
-6x = -20 -10y
[tex]x = \frac{20 + 10y}{6}[/tex]
12x = -67+ 7y
[tex]x = \frac{-67 + 7y}{12}[/tex]
Igualando se tiene:
[tex]\frac{20 + 10y}{6} =\frac{-67 + 7y}{12}\\\\12.(20 + 10y) = 6.(-67+ 7y)\\\\\240 + 120y = - 402 + 42y\\\\120y - 42 y = -402 -240\\78 y = - 642\\\\y = \frac{-107}{13}[/tex]
Sustituyendo:
[tex]x = \frac{20 + 10.(\frac{-107}{13}) }{6} \\\\x = \frac{20 - \frac{1070}{13} }{6} \\\\x = \frac{-135}{13}[/tex]
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Verified answer
Respuesta:
En el paso a paso
Explicación paso a paso:
-6x + 10y = -20
12x - 7y = -67
Despejando en cada una la variable :
-6x = -20 -10y
[tex]x = \frac{20 + 10y}{6}[/tex]
12x - 7y = -67
12x = -67+ 7y
[tex]x = \frac{-67 + 7y}{12}[/tex]
Igualando se tiene:
[tex]\frac{20 + 10y}{6} =\frac{-67 + 7y}{12}\\\\12.(20 + 10y) = 6.(-67+ 7y)\\\\\240 + 120y = - 402 + 42y\\\\120y - 42 y = -402 -240\\78 y = - 642\\\\y = \frac{-107}{13}[/tex]
Sustituyendo:
[tex]x = \frac{20 + 10.(\frac{-107}{13}) }{6} \\\\x = \frac{20 - \frac{1070}{13} }{6} \\\\x = \frac{-135}{13}[/tex]