5. Tentukan penyelesaian soal-soal berikut untuk x anggota bilangan bulat!

Jawaban:

A. X = 3

B. X = 5

C. X = 3

Penjelasan dengan langkah-langkah:

A. 6x – 3 = x + 12 Pindah ruas jadi

6x – x = 12 + 3

5x = 15

x = 15 : 5

x = 3

B. 1x + 5 = 3x – 5 pindah ruas samakan variable

5+5 = 3x – 1x

10 = 2x

x = 5

C. 5(x-3) + 4 = x + 1

5x – 15 + 4 = x + 1 pindah ruas samakan variable

5x – x = 1 + 15 – 4

4x = 12

x = 3

Jawaban:

a. x = 3

b. x = 5

c. x = 3

Penjelasan dengan langkah-langkah:

a. 3 (2x – 1) = x + 12

6x – 3 = x + 12

6x – x = 12 + 3

5x = 15

x = 3✔

___________________

b. x + 5 = 3x – 2½

x – 3x = -5 – 5

-2x = -10

x = 5✔

___________________

c. 5 (x – 3) + 4 = x + 1

5x – 15 + 4 = x + 1

5x – x = 1 + 15 – 4

4x = 12

x = 3✔