Respuesta:
a) y=1 ; x=1
b) y=0 ; x1
Explicación paso a paso:
a)
[tex]\left \{ {{2x-3y=-1} \atop {3x+2y=5}} \right.[/tex]
(-3)·(2x-3y)(-3)(-1)
(2)·(3x+2y)=(2)(5)
-6x+9y=3
6x+4y=10
-6x+9y= 3
+ 6x+4y=10
13y=13
y=13/13=1
sustituimos para hallar x
-6x+9(1)=3
-6x+9=3
-6x=3-9
-6x=-6
x=[tex]\frac{-6}{-6}[/tex]
x=1
b)
[tex]\left \{ {{5x+4y=5} \atop {2x+3y=2}} \right.[/tex]
(-2)·(5x+4y)=(-2)(5)
(5)·(2x+3y)=(5)(2)
-10x-8y=-10
10x+15y=10
+ 10x+15y=10
7y=0
y=[tex]\frac{0}{7}[/tex]
y=0
reemplazamos para hallar x
-10x-8·0=-10
-10x=-10
x=[tex]\frac{-10}{-10}[/tex]
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Verified answer
Respuesta:
a) y=1 ; x=1
b) y=0 ; x1
Explicación paso a paso:
a)
[tex]\left \{ {{2x-3y=-1} \atop {3x+2y=5}} \right.[/tex]
(-3)·(2x-3y)(-3)(-1)
(2)·(3x+2y)=(2)(5)
-6x+9y=3
(2)·(3x+2y)=(2)(5)
-6x+9y=3
6x+4y=10
-6x+9y= 3
+ 6x+4y=10
13y=13
y=13/13=1
sustituimos para hallar x
-6x+9(1)=3
-6x+9=3
-6x=3-9
-6x=-6
x=[tex]\frac{-6}{-6}[/tex]
x=1
b)
[tex]\left \{ {{5x+4y=5} \atop {2x+3y=2}} \right.[/tex]
(-2)·(5x+4y)=(-2)(5)
(5)·(2x+3y)=(5)(2)
-10x-8y=-10
(5)·(2x+3y)=(5)(2)
-10x-8y=-10
10x+15y=10
-10x-8y=-10
+ 10x+15y=10
7y=0
y=[tex]\frac{0}{7}[/tex]
y=0
reemplazamos para hallar x
-10x-8·0=-10
-10x=-10
x=[tex]\frac{-10}{-10}[/tex]
x=1