Math Problem Statement

4(5x−7)=−4(−5x+7)

The equation has infinitely/no/one solution

Solution

Let's solve the equation step by step to determine whether it has infinitely many solutions, no solution, or exactly one solution.

The equation is:

4(5x7)=4(5x+7)4(5x - 7) = -4(-5x + 7)

Step 1: Distribute both sides

On the left-hand side:

4(5x7)=45x47=20x284(5x - 7) = 4 \cdot 5x - 4 \cdot 7 = 20x - 28

On the right-hand side:

4(5x+7)=4(5x)47=20x28-4(-5x + 7) = -4 \cdot (-5x) - 4 \cdot 7 = 20x - 28

So, the equation simplifies to:

20x28=20x2820x - 28 = 20x - 28

Step 2: Subtract 20x20x from both sides

20x2820x=20x2820x20x - 28 - 20x = 20x - 28 - 20x 28=28-28 = -28

Conclusion:

This results in a true statement, 28=28-28 = -28, which holds for any value of xx.

Thus, the equation has infinitely many solutions.


Would you like any further details or have questions about this process?

Here are 5 related questions for further exploration:

  1. What is an example of an equation with no solution?
  2. How do you identify when an equation has exactly one solution?
  3. What happens if we subtract different terms from both sides of an equation?
  4. How do you solve systems of linear equations with infinitely many solutions?
  5. What is the geometric interpretation of infinitely many solutions?

Tip: When solving equations, if both sides simplify to the same constant (like 28=28-28 = -28), it indicates infinitely many solutions.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Distributive Property
Equation Simplification

Formulas

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

Theorems

When both sides of an equation simplify to the same constant, it implies infinitely many solutions.

Suitable Grade Level

Grades 8-10