aarnot02 aarnot02

23-01-2020
Mathematics

contestada

Solve the system of equations by the addition method.
x- y=-9
x+y=-5

Respuesta :

Yang100 Yang100

24-01-2020

Answer:

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

Step-by-step explanation:

x-y=-9

x+y=-5

-----------

2x=-14

x=-14/2

x=-7

-7-y=-9

y=-7-(-9)

y=-7+9

y=2

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