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Simplifying 2(x + -2) + 5x = 8x + -2 + -1(x + 2) Reorder the terms: 2(-2 + x) + 5x = 8x + -2 + -1(x + 2) (-2 * 2 + x * 2) + 5x = 8x + -2 + -1(x + 2) (-4 + 2x) + 5x = 8x + -2 + -1(x + 2) Combine like terms: 2x + 5x = 7x -4 + 7x = 8x + -2 + -1(x + 2) Reorder the terms: -4 + 7x = 8x + -2 + -1(2 + x) -4 + 7x = 8x + -2 + (2 * -1 + x * -1) -4 + 7x = 8x + -2 + (-2 + -1x) Reorder the terms: -4 + 7x = -2 + -2 + 8x + -1x Combine like terms: -2 + -2 = -4 -4 + 7x = -4 + 8x + -1x Combine like terms: 8x + -1x = 7x -4 + 7x = -4 + 7x Add '4' to each side of the equation. -4 + 4 + 7x = -4 + 4 + 7x Combine like terms: -4 + 4 = 0 0 + 7x = -4 + 4 + 7x 7x = -4 + 4 + 7x Combine like terms: -4 + 4 = 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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