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Simplifying 2 + -9(x + 1) = -9x + 7 Reorder the terms: 2 + -9(1 + x) = -9x + 7 2 + (1 * -9 + x * -9) = -9x + 7 2 + (-9 + -9x) = -9x + 7 Combine like terms: 2 + -9 = -7 -7 + -9x = -9x + 7 Reorder the terms: -7 + -9x = 7 + -9x Add '9x' to each side of the equation. -7 + -9x + 9x = 7 + -9x + 9x Combine like terms: -9x + 9x = 0 -7 + 0 = 7 + -9x + 9x -7 = 7 + -9x + 9x Combine like terms: -9x + 9x = 0 -7 = 7 + 0 -7 = 7 Solving -7 = 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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