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Simplifying (2x4 + -7x3 + -5x + 18) + -1(9x3 + -7x + 5) = 0 Reorder the terms: (18 + -5x + -7x3 + 2x4) + -1(9x3 + -7x + 5) = 0 Remove parenthesis around (18 + -5x + -7x3 + 2x4) 18 + -5x + -7x3 + 2x4 + -1(9x3 + -7x + 5) = 0 Reorder the terms: 18 + -5x + -7x3 + 2x4 + -1(5 + -7x + 9x3) = 0 18 + -5x + -7x3 + 2x4 + (5 * -1 + -7x * -1 + 9x3 * -1) = 0 18 + -5x + -7x3 + 2x4 + (-5 + 7x + -9x3) = 0 Reorder the terms: 18 + -5 + -5x + 7x + -7x3 + -9x3 + 2x4 = 0 Combine like terms: 18 + -5 = 13 13 + -5x + 7x + -7x3 + -9x3 + 2x4 = 0 Combine like terms: -5x + 7x = 2x 13 + 2x + -7x3 + -9x3 + 2x4 = 0 Combine like terms: -7x3 + -9x3 = -16x3 13 + 2x + -16x3 + 2x4 = 0 Solving 13 + 2x + -16x3 + 2x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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