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Simplifying -4x + -7 = -7(x + 1) + 3x Reorder the terms: -7 + -4x = -7(x + 1) + 3x Reorder the terms: -7 + -4x = -7(1 + x) + 3x -7 + -4x = (1 * -7 + x * -7) + 3x -7 + -4x = (-7 + -7x) + 3x Combine like terms: -7x + 3x = -4x -7 + -4x = -7 + -4x Add '7' to each side of the equation. -7 + 7 + -4x = -7 + 7 + -4x Combine like terms: -7 + 7 = 0 0 + -4x = -7 + 7 + -4x -4x = -7 + 7 + -4x Combine like terms: -7 + 7 = 0 -4x = 0 + -4x -4x = -4x Add '4x' to each side of the equation. -4x + 4x = -4x + 4x Combine like terms: -4x + 4x = 0 0 = -4x + 4x Combine like terms: -4x + 4x = 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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