Respuesta :

mhanifa

Answer:

  • (9, 3)

Step-by-step explanation:

Given system:

  • x + y = 12
  • x – y = 6

Add up equations:

  • 2x = 18
  • x = 9

Find y:

  • 9 - y = 6
  • y = 9 - 6
  • y = 3

msm555

Answer:

Solution given:

x+y=12......[1]

x-y=6........[2]

adding equation 1 and 2 we get

x+y+x-y=12+6

2x=18

x=18/2

x=9

substituting value of x in equation 1

9+y=12

y=12-9

y=3

x=9

y=3