Solve the system of equations given below.
-5x = y - 5
-2y = -x -21
A.

(-1,-23)

B.

(-1,10)

C.

(10,-45)

D.

(10,16)

Question

rackeljoseph12 rackeljoseph12

14-08-2019
Mathematics

contestada

Solve the system of equations given below.
-5x = y - 5
-2y = -x -21
A.

(-1,-23)

B.

(-1,10)

C.

(10,-45)

D.

(10,16)

Respuesta :

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hoangpm04 hoangpm04 · Answer 1 · 2019-08-14T04:44:10+02:00

hoangpm04 hoangpm04

14-08-2019

Answer:

B

Step-by-step explanation:

-5x = y - 5 (1)

-2y = -x - 21 (2)

Change x to the left hand side of equation (2)

x = 2y - 21 (3)

Multiply (1) by 2 times:

-10x = 2y - 10 (4)

Use (4) - (3)

-10x = 2y - 10

- x = 2y - 21

-11x = -10 + 21

-11 x = 11

x = -1

Apply x = -1 in (1)

-5*(-1) = y - 5

5 = y-5

y = 5+5

y = 10

So x = -1

y = 10

Hope this help you :3

Answer Link

xobriseis xobriseis · Answer 2 · 2019-08-14T04:48:07+02:00

xobriseis xobriseis

14-08-2019

hehe the answer is B (-1,10)

Answer Link

Solve the system of equations given below.-5x = y - 5 -2y = -x -21A. (-1,-23)B. (-1,10)C. (10,-45)D. (10,16)​

Respuesta :

Otras preguntas

Solve the system of equations given below.
-5x = y - 5
-2y = -x -21
A.

(-1,-23)

B.

(-1,10)

C.

(10,-45)

D.

(10,16)