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Simplifying 7 + -9(x + 3) + -5 = 7 + 3(9 + -3x) + -81 Reorder the terms: 7 + -9(3 + x) + -5 = 7 + 3(9 + -3x) + -81 7 + (3 * -9 + x * -9) + -5 = 7 + 3(9 + -3x) + -81 7 + (-27 + -9x) + -5 = 7 + 3(9 + -3x) + -81 Reorder the terms: 7 + -27 + -5 + -9x = 7 + 3(9 + -3x) + -81 Combine like terms: 7 + -27 = -20 -20 + -5 + -9x = 7 + 3(9 + -3x) + -81 Combine like terms: -20 + -5 = -25 -25 + -9x = 7 + 3(9 + -3x) + -81 -25 + -9x = 7 + (9 * 3 + -3x * 3) + -81 -25 + -9x = 7 + (27 + -9x) + -81 Reorder the terms: -25 + -9x = 7 + 27 + -81 + -9x Combine like terms: 7 + 27 = 34 -25 + -9x = 34 + -81 + -9x Combine like terms: 34 + -81 = -47 -25 + -9x = -47 + -9x Add '9x' to each side of the equation. -25 + -9x + 9x = -47 + -9x + 9x Combine like terms: -9x + 9x = 0 -25 + 0 = -47 + -9x + 9x -25 = -47 + -9x + 9x Combine like terms: -9x + 9x = 0 -25 = -47 + 0 -25 = -47 Solving -25 = -47 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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