Respuesta :

olemakpadu
9x + 7y = -12        x = 1

9*1 + 7y = -12

9 + 7y = -12

7y = -12 - 9

7y =-21          Divide through by 7.

y = -21/7

y = -3

Hope this helped.
Aaliyah123456789
9(1) + 7y=-12
9+7y=-12
-9 -9
________
7y/7= -21/7
Y= -3

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