x+7=-2(2x+9) maka x adalah

Mapel : Matematika
Bab : Aljabar

  x + 7 = -2 (2x + 9 )
  x + 7 = -4x - 18
x + 4x = -18 - 7
      5x = -25
        x = -25/5
        x = -5

x + 7 = -2(2x + 9)
= x + 7 = -4x -18
= x = -4x -18 -7
= x = -4x -25
= x + 4x = -25
= 5x = -25
= x = -25 ÷ 5 = -5
inilah jawabane
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