boybaby boybaby

03-01-2020
Mathematics

contestada

what is the solution of the systrem 2x - y = -7 4x - y = -4

Respuesta :

Yang100 Yang100

03-01-2020

Answer:

x=3/2, y=10. (3/2, 10).

Step-by-step explanation:

2x-y=-7

4x-y=-4

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

-2(2x-y)=-2(-7)

4x-y=-4

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

-4x+2y=14

4x-y=-4

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

y=10

2x-10=-7

2x=-7+10

2x=3

x=3/2

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