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Simplifying 2x + -4 + -7x = -8 + -5x + 4 Reorder the terms: -4 + 2x + -7x = -8 + -5x + 4 Combine like terms: 2x + -7x = -5x -4 + -5x = -8 + -5x + 4 Reorder the terms: -4 + -5x = -8 + 4 + -5x Combine like terms: -8 + 4 = -4 -4 + -5x = -4 + -5x Add '4' to each side of the equation. -4 + 4 + -5x = -4 + 4 + -5x Combine like terms: -4 + 4 = 0 0 + -5x = -4 + 4 + -5x -5x = -4 + 4 + -5x Combine like terms: -4 + 4 = 0 -5x = 0 + -5x -5x = -5x Add '5x' to each side of the equation. -5x + 5x = -5x + 5x Combine like terms: -5x + 5x = 0 0 = -5x + 5x Combine like terms: -5x + 5x = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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