Solve the absolute value equation: $25|-2x + 7| = 25$.

AlgebraAbsolute Value EquationsLinear EquationsSolving Equations
2025/3/18

1. Problem Description

Solve the absolute value equation: 252x+7=2525|-2x + 7| = 25.

2. Solution Steps

First, divide both sides of the equation by 25 to isolate the absolute value term:
2x+7=2525|-2x + 7| = \frac{25}{25}
2x+7=1|-2x + 7| = 1
An absolute value equation ax+b=c|ax+b| = c can be rewritten as two separate equations: ax+b=cax+b = c and ax+b=cax+b = -c. In this case, we have:
Case 1: 2x+7=1-2x + 7 = 1
Subtract 7 from both sides:
2x=17-2x = 1 - 7
2x=6-2x = -6
Divide both sides by -2:
x=62x = \frac{-6}{-2}
x=3x = 3
Case 2: 2x+7=1-2x + 7 = -1
Subtract 7 from both sides:
2x=17-2x = -1 - 7
2x=8-2x = -8
Divide both sides by -2:
x=82x = \frac{-8}{-2}
x=4x = 4
Therefore, the solutions are x=3x = 3 and x=4x = 4.

3. Final Answer

The solutions are x=3x = 3 and x=4x = 4.

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