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Simplifying 4(x + 9) = 2(2x + 9) + -18 Reorder the terms: 4(9 + x) = 2(2x + 9) + -18 (9 * 4 + x * 4) = 2(2x + 9) + -18 (36 + 4x) = 2(2x + 9) + -18 Reorder the terms: 36 + 4x = 2(9 + 2x) + -18 36 + 4x = (9 * 2 + 2x * 2) + -18 36 + 4x = (18 + 4x) + -18 Reorder the terms: 36 + 4x = 18 + -18 + 4x Combine like terms: 18 + -18 = 0 36 + 4x = 0 + 4x 36 + 4x = 4x Add '-4x' to each side of the equation. 36 + 4x + -4x = 4x + -4x Combine like terms: 4x + -4x = 0 36 + 0 = 4x + -4x 36 = 4x + -4x Combine like terms: 4x + -4x = 0 36 = 0 Solving 36 = 0 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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