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Simplifying 1 + 15x + 20 = 5(3x + 4) Reorder the terms: 1 + 20 + 15x = 5(3x + 4) Combine like terms: 1 + 20 = 21 21 + 15x = 5(3x + 4) Reorder the terms: 21 + 15x = 5(4 + 3x) 21 + 15x = (4 * 5 + 3x * 5) 21 + 15x = (20 + 15x) Add '-15x' to each side of the equation. 21 + 15x + -15x = 20 + 15x + -15x Combine like terms: 15x + -15x = 0 21 + 0 = 20 + 15x + -15x 21 = 20 + 15x + -15x Combine like terms: 15x + -15x = 0 21 = 20 + 0 21 = 20 Solving 21 = 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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