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Simplifying -7(x + 6) + -15 = 2x + -9(x + 9) Reorder the terms: -7(6 + x) + -15 = 2x + -9(x + 9) (6 * -7 + x * -7) + -15 = 2x + -9(x + 9) (-42 + -7x) + -15 = 2x + -9(x + 9) Reorder the terms: -42 + -15 + -7x = 2x + -9(x + 9) Combine like terms: -42 + -15 = -57 -57 + -7x = 2x + -9(x + 9) Reorder the terms: -57 + -7x = 2x + -9(9 + x) -57 + -7x = 2x + (9 * -9 + x * -9) -57 + -7x = 2x + (-81 + -9x) Reorder the terms: -57 + -7x = -81 + 2x + -9x Combine like terms: 2x + -9x = -7x -57 + -7x = -81 + -7x Add '7x' to each side of the equation. -57 + -7x + 7x = -81 + -7x + 7x Combine like terms: -7x + 7x = 0 -57 + 0 = -81 + -7x + 7x -57 = -81 + -7x + 7x Combine like terms: -7x + 7x = 0 -57 = -81 + 0 -57 = -81 Solving -57 = -81 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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