2x + 3y = 7
7x - y = 13

mass, mba, kk, ade sma suhu tolong dong selesai pke subtitusi sam mee

Jawaban

• Jawaban diposting oleh: ferdi6237

  Diketahui :
  2x + 3y = 7
  7x - y = 13
  
  Ditanya :
  x dan y?
  
  Jawab :
  7x - y = 13
  y = 7x - 13
  
  2x + 3y = 7
  2x + 3(7x - 13) = 7
  2x + 21x - 39 = 7
  23x = 46
  x = 2
  
  y = 7x - 13
  y = 7(2) - 13
  y = 14 - 13
  y = 13
  
  (Substitusi)
  
  
  
  7x - y = 13 | ×3 |
  2x + 3y = 7 | ×1 |
  
  21x - 3y = 39
  2x + 3y = 7
  +
  23x = 46
  x = 2
  
  7x - y = 13
  7(2) - y = 13
  14 - y = 13
  y = 1
  
  (Eliminasi)
• Jawaban diposting oleh: winwin16

  Semogaa membantu slurrrr
  
• Jawaban diposting oleh: sitiekafadilla638

  2x + 3y = 7 ...(1)

  7x - y = 13 ...(2)

  Eliminasikan:

  2x + 3y = 7 |x7| 14x + 21y = 49

  7x - y = 13 |x2| 14x - 2y = 26

  -

  23y = 23

  y = 23/23

  y = 1

  Substitusikan:

  7x - y = 13

  7x - 1 = 13

  7x = 13 + 1

  7x = 14

  x = 14/7

  x = 2
• Jawaban diposting oleh: DanangNakBhocil5499

  jawaban:

  (2,1)

  Penjelasan dengan langkah-langkah:

  eliminasi

  2x + 3y = 7

  21x - 3y = 39

  (+)

  23x = 46

  x = 2

  subtitusi

  2x + 3y = 7

  2(2) + 3y = 7

  4 + 3y = 7

  3y = 7 - 4

  3y = 3

  y = 1
• Jawaban diposting oleh: Gatauapaan6449

  jawaban:

  2X+3Y =7 (Dikali 7)

  7X-Y = 13 (Dikali 2)

  14X + 21Y =49

  14X-2Y =26

  19Y = 23

  Y = 23/19

  Y =1,2

  2X+3Y=7

  2X+3(1,2) =7

  2X +3,6 =7

  2X =7-3,6

  2X =3,4

  X= 3,4/2

  X= 1,7