sgramps sgramps

26-02-2021
Mathematics

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breta worked to solve a system of equations 4x +y=-5 x-y=-5

Respuesta :

Yang100 Yang100

26-02-2021

Answer:

x=-2, y=3. (-2, 3).

Step-by-step explanation:

4x+y=-5

x-y=-5

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

x=y+(-5)

x=y-5

substitute into the first equation,

4(y-5)+y=-5

4y-20+y=-5

5y-20=-5

5y=-5+20

5y=15

y=15/5=3

x=3-5=-2

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