Tentukan selsaian dari :

Jawaban:

1. x = 7

2. x = 9

3. x = 2

Penjelasan dengan langkah-langkah:

1. x + 5 = 12

x = 12 – 5

x = 7

2. x – 3 = 6

x = 6 + 3

x = 9

3. 5x + 2x = 14

7x = 14

x = 14/7

x = 2