bobral2005 bobral2005

09-12-2019
Mathematics

contestada

Solve the system of linear equations by elimination.

−2x−5y=9
3x+11y=4

Respuesta :

Yang100 Yang100

11-12-2019

Answer:

x=-17, y=5. (-17, 5).

Step-by-step explanation:

-2x-5y=9

3x+11y=4

---------------

3(-2x-5y)=3(9)

2(3x+11y)=2(4)

---------------------

-6x-15y=27

6x+22y=8

-----------------

7y=35

y=35/7

y=5

3x+11(5)=4

3x+55=4

3x=4-55

3x=-51

x=-51/3

x=-17

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