lawsonalec632 lawsonalec632
  • 10-11-2020
  • Mathematics
contestada

Solve using substitution.
2x - 2y = 2
y = -5x + 14

Respuesta :

nsnsjdjrkoeoalwlwkkw nsnsjdjrkoeoalwlwkkw
  • 10-11-2020

Answer:

x

=

5

2

and

y

=

3

2

Step-by-step explanation:

Let's solve your system by substitution.

2

x

−

2

y

=

2

;

y

=

−

5

x

+

14

Rewrite equations:

y

=

−

5

x

+

14

;

2

x

−

2

y

=

2

Step: Solve

y

=

−

5

x

+

14

for y:

y

=

−

5

x

+

14

Step: Substitute

−

5

x

+

14

for

y

in

2

x

−

2

y

=

2

:

2

x

−

2

y

=

2

2

x

−

2

(

−

5

x

+

14

)

=

2

12

x

−

28

=

2

(Simplify both sides of the equation)

12

x

−

28

+

28

=

2

+

28

(Add 28 to both sides)

12

x

=

30

12

x

12

=

30

12

(Divide both sides by 12)

x

=

5

2

Step: Substitute

5

2

for

x

in

y

=

−

5

x

+

14

:

y

=

−

5

x

+

14

y

=

−

5

(

5

2

)

+

14

y

=

3

2

(Simplify both sides of the equation)

Answer:

x

=

5

2

and

y

=

3

2

Answer Link

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