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Simplifying 7(2 + -3x) + x = 5 + -20x (2 * 7 + -3x * 7) + x = 5 + -20x (14 + -21x) + x = 5 + -20x Combine like terms: -21x + x = -20x 14 + -20x = 5 + -20x Add '20x' to each side of the equation. 14 + -20x + 20x = 5 + -20x + 20x Combine like terms: -20x + 20x = 0 14 + 0 = 5 + -20x + 20x 14 = 5 + -20x + 20x Combine like terms: -20x + 20x = 0 14 = 5 + 0 14 = 5 Solving 14 = 5 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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