vanessa6666 vanessa6666
  • 20-07-2021
  • Mathematics
contestada

Use elimination
X+y =9
X-y=7

Respuesta :

moranf611
moranf611 moranf611
  • 20-07-2021

Answer:

x = 8

y = 1

Step-by-step explanation:

  x + y = 9

- ( x - y = 7)

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

      2y = 2

        y = 2/2

        y = 1

   x + y = 9

x + ( 1 ) = 9

         x = 9 - 1  

         x = 8

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