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Simplifying 2(x + 1) + 7 = 4x + -2(-5 + x) Reorder the terms: 2(1 + x) + 7 = 4x + -2(-5 + x) (1 * 2 + x * 2) + 7 = 4x + -2(-5 + x) (2 + 2x) + 7 = 4x + -2(-5 + x) Reorder the terms: 2 + 7 + 2x = 4x + -2(-5 + x) Combine like terms: 2 + 7 = 9 9 + 2x = 4x + -2(-5 + x) 9 + 2x = 4x + (-5 * -2 + x * -2) 9 + 2x = 4x + (10 + -2x) Reorder the terms: 9 + 2x = 10 + 4x + -2x Combine like terms: 4x + -2x = 2x 9 + 2x = 10 + 2x Add '-2x' to each side of the equation. 9 + 2x + -2x = 10 + 2x + -2x Combine like terms: 2x + -2x = 0 9 + 0 = 10 + 2x + -2x 9 = 10 + 2x + -2x Combine like terms: 2x + -2x = 0 9 = 10 + 0 9 = 10 Solving 9 = 10 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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