Tentukan selesaian persamaan berikut dengan menambah atau mengurangi kedua ruas dengan bilangan yang sama. a. a – 8 = 4 b. 5p – 7 = 4p + 3 c. 7x – 3 = 3x + 17​

a – 8 = 4

a = 4 + 8

a = 12

5p – 7 = 4p + 3

5p – 4p = 3 + 7

p = 10

7x – 3 = 3x + 17

7x – 3x = 17 + 3

4x = 20

x = 5

Penjelasan dengan langkah-langkah:

a) a – 8 = 4

a – 8 + 8 = 4 + 8

a = 12

b) 5p – 7 = 4p + 3

5p – 4p – 7 = 4p – 4p + 3

p – 7 = 3

p – 7 + 7 = 3 + 7

p = 10

c) 7x – 3 = 3x + 17

7x – 3x – 3 = 3x – 3x + 17

4x – 3 = 17

4x – 3 + 3 = 17 + 3

4x = 20

4x (1/4) = 20 (1/4)

x = 5