Find the value of x: 8x + 5 = 5x - 7

Let's break it down:

1. Combine x terms: Subtract 5x from both sides:

   8x - 5x + 5 = 5x - 5x - 7

   3x + 5 = -7

2. Combine number terms: Subtract 5 from both sides:

   3x + 5 - 5 = -7 - 5

   3x = -12

3. Isolate x: Divide both sides by 3:

   3x / 3 = -12 / 3

   x = -4

Ответ: x = -4