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Simplifying 3(1 + -1x) = 7 + -3x (1 * 3 + -1x * 3) = 7 + -3x (3 + -3x) = 7 + -3x Add '3x' to each side of the equation. 3 + -3x + 3x = 7 + -3x + 3x Combine like terms: -3x + 3x = 0 3 + 0 = 7 + -3x + 3x 3 = 7 + -3x + 3x Combine like terms: -3x + 3x = 0 3 = 7 + 0 3 = 7 Solving 3 = 7 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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