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Simplifying 4(x + 5) + 1 = 4x + 16 Reorder the terms: 4(5 + x) + 1 = 4x + 16 (5 * 4 + x * 4) + 1 = 4x + 16 (20 + 4x) + 1 = 4x + 16 Reorder the terms: 20 + 1 + 4x = 4x + 16 Combine like terms: 20 + 1 = 21 21 + 4x = 4x + 16 Reorder the terms: 21 + 4x = 16 + 4x Add '-4x' to each side of the equation. 21 + 4x + -4x = 16 + 4x + -4x Combine like terms: 4x + -4x = 0 21 + 0 = 16 + 4x + -4x 21 = 16 + 4x + -4x Combine like terms: 4x + -4x = 0 21 = 16 + 0 21 = 16 Solving 21 = 16 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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