Example

Determining if x=12x = -\frac{1}{2} is a Solution of 4x2=2x+14x - 2 = 2x + 1

To verify if x=12x = -\frac{1}{2} is a valid solution to the linear equation 4x2=2x+14x - 2 = 2x + 1, apply the three-step determination strategy:

  1. Substitute: Replace the variable in the equation with the given numerical value: 4(12)2=2(12)+14\left(-\frac{1}{2}\right) - 2 = 2\left(-\frac{1}{2}\right) + 1.
  2. Simplify: Independently simplify the mathematical expressions on both sides. Multiply first: 22=1+1-2 - 2 = -1 + 1. Then add and subtract: 4=0-4 = 0.
  3. Determine truth: Since 4=0-4 = 0 is a false mathematical statement, the value x=12x = -\frac{1}{2} is not a solution to the equation.

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Updated 2026-06-23

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