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Simplifying 0.4(10 + 5x) = 2x (10 * 0.4 + 5x * 0.4) = 2x (4 + 2x) = 2x Add '-2x' to each side of the equation. 4 + 2x + -2x = 2x + -2x Combine like terms: 2x + -2x = 0 4 + 0 = 2x + -2x 4 = 2x + -2x Combine like terms: 2x + -2x = 0 4 = 0 Solving 4 = 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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