Respuestas
Respuesta:
2
x
+
y
=
7
3
x
−
y
=
3
Subtract
2
x
from both sides of the equation.
y
=
7
−
2
x
3
x
−
y
=
3
Replace all occurrences of
y
with
7
−
2
x
in each equation.
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5
x
−
7
=
3
y
=
7
−
2
x
Solve for
x
in the first equation.
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x
=
2
y
=
7
−
2
x
Replace all occurrences of
x
with
2
in each equation.
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y
=
3
x
=
2
The solution to the system is the complete set of ordered pairs that are valid solutions.
(
2
,
3
)
The result can be shown in multiple forms.
Point Form:
(
2
,
3
)
Equation Form:
x
=
2
,
y
=
3
image of graph
Explicación paso a paso:
2x + y = 7
2) 3x - y = 3
----------------
5x + 0y = 10
5x = 10
x = 10/5
x = 2
Reemplazo el valor de x en ecuación 1.
2x + y = 7
2 (2) + y = 7
4 + y = 7
y = 7 - 4
y = 3
Solución :
x = 2
y = 3
Respuesta:
y=5 o y=4 . 3x = 7 o 3
Explicación paso a paso:
mm calculo mental