lockleyalex5 lockleyalex5

27-01-2021
Mathematics

contestada

Y= -2x
7x-8y=-23
Solve the system using the substitution method

Respuesta :

Аноним Аноним

27-01-2021

Answer:

x=-1 and y=2

Step-by-step explanation:

substitute -2x for y in 7x-8y=-23

7x-8y=-23

7x-8-2x=-23

23x=-23

x=-1

substitute -1 for x in y=-2x

y=-2x

y=(-2)(-1)

y=2

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