desmondpacheco
desmondpacheco desmondpacheco
  • 04-06-2019
  • Mathematics
contestada

-7x+8y=39 find the value of y when x equals -9

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EmmaRoseAndre
EmmaRoseAndre EmmaRoseAndre
  • 04-06-2019

-7x+8y=39

x=-9

-7×-9+8y=39

63+8y=39

8y=39-63

8y=-24

y=-24÷8

y=-3

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