4. Jika x adalah bilangan asli, tentukanlah himpunan penyelesaian da

a. 6x + 5 = 26 – x

6x + x = 26 – 5

7x = 21

x = 3

b. 2 – 4x = 3

-4x = 3 – 2

-4x = 1

x = -1/4

c. x – 12 = 2x + 36

x – 2x = 36 + 12

-x = 48

x = -48

d. -5x – 4x + 10 = 1

-5x -4x = 1 – 10

-9x = -9

x = 1

e. 2+ x/4 = 5 (×4)

8 + x = 5

x = 5 – 8

x = -3

maap kalo salah