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galben [10]
3 years ago
15

Solve the following system of equations. x + y = 12 x – y = 6

Mathematics
2 answers:
netineya [11]3 years ago
8 0

Answer:

  • (9, 3)

Step-by-step explanation:

<u>Given system:</u>

  • x + y = 12
  • x – y = 6

<u>Add up equations:</u>

  • 2x = 18
  • x = 9

<u>Find y:</u>

  • 9 - y = 6
  • y = 9 - 6
  • y = 3

gavmur [86]3 years ago
7 0

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

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