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Simplifying -5(2x) + 1 = -10x + 21 Remove parenthesis around (2x) -5 * 2x + 1 = -10x + 21 Multiply -5 * 2 -10x + 1 = -10x + 21 Reorder the terms: 1 + -10x = -10x + 21 Reorder the terms: 1 + -10x = 21 + -10x Add '10x' to each side of the equation. 1 + -10x + 10x = 21 + -10x + 10x Combine like terms: -10x + 10x = 0 1 + 0 = 21 + -10x + 10x 1 = 21 + -10x + 10x Combine like terms: -10x + 10x = 0 1 = 21 + 0 1 = 21 Solving 1 = 21 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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