Math Problem Statement

If -4x + 7 = -11, then x = ?

Solution

To solve the equation:

4x+7=11-4x + 7 = -11

we will isolate xx by following these steps:

  1. Subtract 7 from both sides: 4x=117-4x = -11 - 7 4x=18-4x = -18

  2. Divide both sides by -4 to solve for xx: x=184=184=4.5x = \frac{-18}{-4} = \frac{18}{4} = 4.5

Thus, the answer is: E. 4.5\boxed{\text{E. } 4.5}

Would you like a further breakdown of the steps? Here are some additional questions that build on this type of problem:

  1. How would the solution change if the equation were 4x+7=13-4x + 7 = -13?
  2. What is the solution if the equation is 5x+7=18-5x + 7 = -18?
  3. How can you check if a solution is correct in a linear equation?
  4. If the equation were 4x7=114x - 7 = 11, what would be the value of xx?
  5. How does changing the sign of xx in the equation affect the solution?

Tip: When solving linear equations, always perform the same operation on both sides to keep the equation balanced.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

-4x + 7 = -11

Theorems

Basic principles of solving linear equations

Suitable Grade Level

Grades 7-9