markussamples markussamples

25-04-2020
Mathematics

contestada

Solve the system using elimination.

y – x = 13
7y + x = 11

(–10, 16)

(–10, 3)

(3, 16)

(–3, –10)

Respuesta :

arsingh93 arsingh93

25-04-2020

Answer:

(-10, 3)

Step-by-step explanation:

Y - X = 13

7Y + X = 11

(Y+7Y) + (-X+X) = 13+11

8Y = 24

Y = 3

Solving for X:

Y - X = 13

Substitute Y=3

3 - X = 13

-X = 13-3

-X = 10

Multiply by - 1,

X = - 10

(-10, 3)

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