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Simplifying [-9x + -7] = [-9x + -3] Reorder the terms: [-7 + -9x] = [-9x + -3] Remove brackets around [-7 + -9x] -7 + -9x = [-9x + -3] Reorder the terms: -7 + -9x = [-3 + -9x] Remove brackets around [-3 + -9x] -7 + -9x = -3 + -9x Add '9x' to each side of the equation. -7 + -9x + 9x = -3 + -9x + 9x Combine like terms: -9x + 9x = 0 -7 + 0 = -3 + -9x + 9x -7 = -3 + -9x + 9x Combine like terms: -9x + 9x = 0 -7 = -3 + 0 -7 = -3 Solving -7 = -3 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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