Math Problem Statement

Which equation has no solution?

Solution

Let's go through each equation one by one to determine which has no solution.

  1. 3(2x+1)8x=2(x+1)3(2x + 1) - 8x = -2(x + 1): 6x+38x=2x26x + 3 - 8x = -2x - 2 Simplifying both sides: (6x8x)+3=2x22x+3=2x2(6x - 8x) + 3 = -2x - 2 \Rightarrow -2x + 3 = -2x - 2 Adding 2x2x to both sides: 3=23 = -2 This is a contradiction, meaning this equation has no solution.

  2. 6(2x1)=4(3x1)26(2x - 1) = 4(3x - 1) - 2: 12x6=12x4212x - 6 = 12x - 4 - 2 Simplifying both sides: 12x6=12x612x - 6 = 12x - 6 This is a true statement for all values of xx, so this equation has infinitely many solutions.

  3. 2(2x5)=2(2x5)2(2x - 5) = 2(2x - 5): Expanding both sides: 4x10=4x104x - 10 = 4x - 10 This is also a true statement for all xx, meaning it has infinitely many solutions.

  4. 104(x+9)=2(2x+13)10 - 4(x + 9) = -2(2x + 13): Expanding both sides: 104x36=4x2610 - 4x - 36 = -4x - 26 Simplifying: 4x26=4x26-4x - 26 = -4x - 26 This is also true for all xx, so this equation has infinitely many solutions.

Conclusion:

The equation with no solution is the first one: 3(2x+1)8x=2(x+1)3(2x + 1) - 8x = -2(x + 1)

Would you like further details or have any questions? Here are some related questions:

  1. What are the different types of solutions for linear equations?
  2. Can a linear equation have more than one solution?
  3. How do we recognize a contradiction in a system of equations?
  4. What is the difference between inconsistent and consistent systems?
  5. How can graphing help visualize solutions to equations?

Tip: When solving equations, always look for contradictions like 3=23 = -2 to identify equations with no solution.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Contradiction in Equations

Formulas

Distributive property
Basic algebraic manipulation

Theorems

Contradiction theorem in algebra

Suitable Grade Level

Grades 8-10