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Simplifying -9(x + -3) + 4 = -7x + -2(x + 7) Reorder the terms: -9(-3 + x) + 4 = -7x + -2(x + 7) (-3 * -9 + x * -9) + 4 = -7x + -2(x + 7) (27 + -9x) + 4 = -7x + -2(x + 7) Reorder the terms: 27 + 4 + -9x = -7x + -2(x + 7) Combine like terms: 27 + 4 = 31 31 + -9x = -7x + -2(x + 7) Reorder the terms: 31 + -9x = -7x + -2(7 + x) 31 + -9x = -7x + (7 * -2 + x * -2) 31 + -9x = -7x + (-14 + -2x) Reorder the terms: 31 + -9x = -14 + -7x + -2x Combine like terms: -7x + -2x = -9x 31 + -9x = -14 + -9x Add '9x' to each side of the equation. 31 + -9x + 9x = -14 + -9x + 9x Combine like terms: -9x + 9x = 0 31 + 0 = -14 + -9x + 9x 31 = -14 + -9x + 9x Combine like terms: -9x + 9x = 0 31 = -14 + 0 31 = -14 Solving 31 = -14 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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