X+2y=8X-y=2Tolong kakak jgn di jawab soalnya buat kemarinn, please…​

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X+2y=8X-y=2Tolong kakak jgn di jawab soalnya buat kemarinn, please…​

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» Jawaban

x = 4

y = 2

» Pembuktian

= x + 2y

= 4 + 2(2)

= 4 + 4

= 8

= x − y

= 4 − 2

= 2

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» SPLDV

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Diketahui :

  • x + 2y = 8 ………. pers 1
  • x – y = 2 ………… pers 2

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★ Penyelesaian

eliminasi pera 1 ke pers 2

x + 2y = 8

x – y = 2

—————— –

3y = 6

y = 6/3

y = 2

substitusikan nilai y ke pers 2

x – y = 2

x – 2 = 2

x = 2 + 2

x = 4

HP = { 4,2 }