Respuesta:
mira aqui te lo explico si 9×+2y=87 seria asi
x=7;y=12
Explicación paso a paso:
9x+2y=87 -> x(-2) ==> -18x - 4y = -174
6x+4y=90 ========> 6x +4y = 90
------------------------
-12x = -84 => x = 7
Si x = 7 ==> 9*7 + 2y = 87 => 2y = 87 - 63 => 2y = 24 => y =12
Comprobación:
9*7 + 2*12 = 63 + 24 = 87
6*7 + 4*12 = 42 + 48 = 90
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Respuesta:
mira aqui te lo explico si 9×+2y=87 seria asi
Respuesta:
x=7;y=12
Explicación paso a paso:
9x+2y=87 -> x(-2) ==> -18x - 4y = -174
6x+4y=90 ========> 6x +4y = 90
------------------------
-12x = -84 => x = 7
Si x = 7 ==> 9*7 + 2y = 87 => 2y = 87 - 63 => 2y = 24 => y =12
Comprobación:
9*7 + 2*12 = 63 + 24 = 87
6*7 + 4*12 = 42 + 48 = 90