Respuesta:
La incógnita ''y'' vale 4.
La incógnita ''x'' vale 1.
Explicación paso a paso:
Método de igualación:
5x–2y = –3 1)
–2x–y = –6 2)
Despejar ''x'' en 1)
5x–2y = –3
[tex]x=\frac{-3+2y}{5}[/tex]
Despejar ''x'' en 2)
–2x–y = –6
[tex]x = \frac{-6+y}{-2}[/tex]
[tex]\frac{-6+y}{-2}[/tex] [tex]=\frac{-3+2y}{5}[/tex]
5(-6+y) = -2(-3+2y)
-30+5y = 6-4y
5y+4y = 6+30
9y = 36
y = 36/9
y = 4
Remplazo ''y'' en 2)
-2x-4 = -6
-2x = -6+4
-2x = -2
x = -2/-2
x = 1
Comprobación:
5(1)–2(4) = -3 1)
5-8 = -3
–2(1)–4 = -6 2)
-2-4 = -6
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Verified answer
Respuesta:
La incógnita ''y'' vale 4.
La incógnita ''x'' vale 1.
Explicación paso a paso:
Método de igualación:
5x–2y = –3 1)
–2x–y = –6 2)
Despejar ''x'' en 1)
5x–2y = –3
[tex]x=\frac{-3+2y}{5}[/tex]
Despejar ''x'' en 2)
–2x–y = –6
[tex]x = \frac{-6+y}{-2}[/tex]
[tex]\frac{-6+y}{-2}[/tex] [tex]=\frac{-3+2y}{5}[/tex]
5(-6+y) = -2(-3+2y)
-30+5y = 6-4y
5y+4y = 6+30
9y = 36
y = 36/9
y = 4
Remplazo ''y'' en 2)
–2x–y = –6
-2x-4 = -6
-2x = -6+4
-2x = -2
x = -2/-2
x = 1
Comprobación:
5(1)–2(4) = -3 1)
5-8 = -3
–2(1)–4 = -6 2)
-2-4 = -6