Math Problem Statement

-4(7+2x)=7(x+11)

Solution

Let's solve the equation:

4(7+2x)=7(x+11)-4(7 + 2x) = 7(x + 11)

Step 1: Expand both sides of the equation

On the left-hand side, apply the distributive property:

4(7)4(2x)=288x-4(7) - 4(2x) = -28 - 8x

On the right-hand side, apply the distributive property as well:

7(x)+7(11)=7x+777(x) + 7(11) = 7x + 77

Now, the equation becomes:

288x=7x+77-28 - 8x = 7x + 77

Step 2: Move all terms with xx to one side

Add 8x8x to both sides to eliminate the 8x-8x from the left-hand side:

28=15x+77-28 = 15x + 77

Step 3: Move constant terms to the other side

Subtract 77 from both sides to isolate the term with xx:

2877=15x-28 - 77 = 15x

105=15x-105 = 15x

Step 4: Solve for xx

Divide both sides by 15:

x=10515x = \frac{-105}{15}

x=7x = -7

Final Answer:

x=7x = -7

Do you have any questions or need further details?


Here are 5 related questions to deepen your understanding:

  1. What is the distributive property and how is it applied in algebraic equations?
  2. How would the equation change if the right-hand side had been 7(x11)7(x - 11)?
  3. Can you solve for xx if both sides of the equation included quadratic terms?
  4. How would the solution differ if the original equation had different coefficients?
  5. What would happen if you added a constant term to both sides of the equation?

Tip: Always double-check your work by substituting the solution back into the original equation to verify it.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Distributive Property

Formulas

Distributive property: a(b + c) = ab + ac

Theorems

Properties of Equality

Suitable Grade Level

Grades 8-10