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Simplifying 3(2x + -3) + x = 2x + 5x + -9 Reorder the terms: 3(-3 + 2x) + x = 2x + 5x + -9 (-3 * 3 + 2x * 3) + x = 2x + 5x + -9 (-9 + 6x) + x = 2x + 5x + -9 Combine like terms: 6x + x = 7x -9 + 7x = 2x + 5x + -9 Reorder the terms: -9 + 7x = -9 + 2x + 5x Combine like terms: 2x + 5x = 7x -9 + 7x = -9 + 7x Add '9' to each side of the equation. -9 + 9 + 7x = -9 + 9 + 7x Combine like terms: -9 + 9 = 0 0 + 7x = -9 + 9 + 7x 7x = -9 + 9 + 7x Combine like terms: -9 + 9 = 0 7x = 0 + 7x 7x = 7x Add '-7x' to each side of the equation. 7x + -7x = 7x + -7x Combine like terms: 7x + -7x = 0 0 = 7x + -7x Combine like terms: 7x + -7x = 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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