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Simplifying 8 + -4x + -7 = 2(9 + -2x) Reorder the terms: 8 + -7 + -4x = 2(9 + -2x) Combine like terms: 8 + -7 = 1 1 + -4x = 2(9 + -2x) 1 + -4x = (9 * 2 + -2x * 2) 1 + -4x = (18 + -4x) Add '4x' to each side of the equation. 1 + -4x + 4x = 18 + -4x + 4x Combine like terms: -4x + 4x = 0 1 + 0 = 18 + -4x + 4x 1 = 18 + -4x + 4x Combine like terms: -4x + 4x = 0 1 = 18 + 0 1 = 18 Solving 1 = 18 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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