Respuesta:
a = 3 b = -1
Explicación paso a paso:
Método de igualación:
2a + b = 5 => a = 5 - b/2
a + 2b = 1 => a = 1 - 2b
5-b/2 = 1 - 2b
5 - b = 2 - 4b
3 = -3b => b = -1 a = 3
Comprobación:
2(3) + (-1) = 5 => 6 - 1 = 5 => 5 = 5
3 + 2(-1) = 1 => 3 - 2 = 1 => 1 = 1
RPTA: a = 3 b = -1
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Respuesta:
a = 3 b = -1
Explicación paso a paso:
Método de igualación:
2a + b = 5 => a = 5 - b/2
a + 2b = 1 => a = 1 - 2b
5-b/2 = 1 - 2b
5 - b = 2 - 4b
3 = -3b => b = -1 a = 3
Comprobación:
2(3) + (-1) = 5 => 6 - 1 = 5 => 5 = 5
3 + 2(-1) = 1 => 3 - 2 = 1 => 1 = 1
RPTA: a = 3 b = -1