Respuesta :

Space

Answer:

x = -7

General Formulas and Concepts:

Pre-Algebra

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

Step 1: Define equation

2.5x + 10 = x - 0.5

Step 2: Solve for x

  1. Subtract x on both sides:                    1.5x + 10 = -0.5
  2. Subtract 10 on both sides:                  1.5x = -10.5
  3. Divide both sides by 1.5:                     x = -7

Step 3: Check

Plug in x to verify it's a solution.

  1. Substitute:                    2.5(-7) + 10 = -7 - 0.5
  2. Multiply:                        -17.5 + 10 = -7 - 0.5
  3. Add/Subtract:               -7.5 = -7.5

And we have our answer!
The correct answer is-7

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