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Simplifying (x + -13) + -1(x + -4) + 2x = 0 Reorder the terms: (-13 + x) + -1(x + -4) + 2x = 0 Remove parenthesis around (-13 + x) -13 + x + -1(x + -4) + 2x = 0 Reorder the terms: -13 + x + -1(-4 + x) + 2x = 0 -13 + x + (-4 * -1 + x * -1) + 2x = 0 -13 + x + (4 + -1x) + 2x = 0 Reorder the terms: -13 + 4 + x + -1x + 2x = 0 Combine like terms: -13 + 4 = -9 -9 + x + -1x + 2x = 0 Combine like terms: x + -1x = 0 -9 + 0 + 2x = 0 -9 + 2x = 0 Solving -9 + 2x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 2x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 2x = 0 + 9 2x = 0 + 9 Combine like terms: 0 + 9 = 9 2x = 9 Divide each side by '2'. x = 4.5 Simplifying x = 4.5
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