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Simplifying 4x * 2 + -9 = 8x + -9 Reorder the terms for easier multiplication: 4 * 2x + -9 = 8x + -9 Multiply 4 * 2 8x + -9 = 8x + -9 Reorder the terms: -9 + 8x = 8x + -9 Reorder the terms: -9 + 8x = -9 + 8x Add '9' to each side of the equation. -9 + 9 + 8x = -9 + 9 + 8x Combine like terms: -9 + 9 = 0 0 + 8x = -9 + 9 + 8x 8x = -9 + 9 + 8x Combine like terms: -9 + 9 = 0 8x = 0 + 8x 8x = 8x Add '-8x' to each side of the equation. 8x + -8x = 8x + -8x Combine like terms: 8x + -8x = 0 0 = 8x + -8x Combine like terms: 8x + -8x = 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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