Question

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Q.

Kerjakan Soal soal berikut ini dengan cara yang benar

Soal 1 (Pakai cara subsitusi)

1. 2x + 1 = 9
2. 4x - 5 = -13
3. 3x = 2x - 15
4. 2x = 3x - 8

Soal 2 (Pakai cara setara)

1. 6x - 12 = 3x
2. 5x + 15 = -2x + 1
3. 8 + 2x = 3x -1

[tex]\rm{Pakai~Cara~Ya^^}[/tex]

Nt : Maaf kalo kebanyakan tapi untungnya banyak hihihi...

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Answer 1

Verified answer

Jawab:

Soal 1

1. x = 4
2. x = -2
3. x = -15
4. x = 8

Soal 2

1. x = 3
2. x = -2
3. x = 9

Penjelasan dengan langkah-langkah:

Soal 1

1. 2x + 1 = 9

   2x = 9 - 1

   2x = 8

     x = ⁸⁄₂

     x = 4

2. 4x - 5 = -13

    4x = -13 + 5

    4x = -8

      x = -⁸⁄₄

      x = -2

3. 3x = 2x - 15

    3x - 2x = -15

      x = -15

4. 2x = 3x - 8

    2x - 3x = -8

     -x = -8

      x = 8

┄

Soal 2

1. 6x - 12 = 3x

   6x - 3x = 12

   3x = 12

     x = ¹²⁄₄

     x = 3

2. 5x + 15 = -2x + 1

    5x + 2x = 1 - 15

    7x = -14

      x = -¹⁴⁄₇

      x = -2

3. 8 + 2x = 3x - 1

    2x - 3x = -1 - 8

     -x = -9

      x = 9