Respuesta:
[tex]x + 2y = 13 \: \: \: \: \: \: ( \times - 1) \\ - x - 2y = - 13 \\ x + 3 y = 18 \\ y = 5 \\ x + 2y = 13 \\ x + 2 \times 5 = 13 \\ x + 10 = 13 \\ x = 13 - 10 = 3 \\ x = 3[/tex]
Explicación paso a paso:
[tex]x + 2y = 13 \\ 3 + 2 \times 5 = 3 + 10 = 13[/tex]
[tex]x + 3y = 18 \\ 3 + 3 \times 5 = 3 + 15 = 18[/tex]
espero te sirva
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Respuesta:
[tex]x + 2y = 13 \: \: \: \: \: \: ( \times - 1) \\ - x - 2y = - 13 \\ x + 3 y = 18 \\ y = 5 \\ x + 2y = 13 \\ x + 2 \times 5 = 13 \\ x + 10 = 13 \\ x = 13 - 10 = 3 \\ x = 3[/tex]
Explicación paso a paso:
[tex]x + 2y = 13 \\ 3 + 2 \times 5 = 3 + 10 = 13[/tex]
[tex]x + 3y = 18 \\ 3 + 3 \times 5 = 3 + 15 = 18[/tex]
espero te sirva