bradensanchez11
bradensanchez11 bradensanchez11
  • 02-12-2014
  • Mathematics
contestada

how do i solve 7x-y=21

Respuesta :

NasimAljabri NasimAljabri
  • 02-12-2014
it is 3 because we multiply 3 and 7 and we get 21
Answer Link
aceituno98 aceituno98
  • 02-12-2014
The answer answer is actually -3 because you divided 7 from 21 and you get 3 then you divided -1 because the y has a negative sing on it and you want it to be positive. That is why the answer is -3
Answer Link

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