janethgonzez2003 janethgonzez2003

11-12-2019
Mathematics

contestada

Solve each system by elimination.
-7x+9y=16
7x-8y=-8

Respuesta :

Yang100 Yang100

13-12-2019

Answer:

x=8, y=8. (8, 8).

Step-by-step explanation:

-7x+9y=16

7x-8y=-8

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

y=8

7x-8(8)=-8

7x-64=-8

7x=-8+64

7x=56

x=56/7

x=8

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