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Simplifying 4(x + 4) = 4(x + 5) Reorder the terms: 4(4 + x) = 4(x + 5) (4 * 4 + x * 4) = 4(x + 5) (16 + 4x) = 4(x + 5) Reorder the terms: 16 + 4x = 4(5 + x) 16 + 4x = (5 * 4 + x * 4) 16 + 4x = (20 + 4x) Add '-4x' to each side of the equation. 16 + 4x + -4x = 20 + 4x + -4x Combine like terms: 4x + -4x = 0 16 + 0 = 20 + 4x + -4x 16 = 20 + 4x + -4x Combine like terms: 4x + -4x = 0 16 = 20 + 0 16 = 20 Solving 16 = 20 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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