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Simplifying -3(x + 3) + -4 = 13 Reorder the terms: -3(3 + x) + -4 = 13 (3 * -3 + x * -3) + -4 = 13 (-9 + -3x) + -4 = 13 Reorder the terms: -9 + -4 + -3x = 13 Combine like terms: -9 + -4 = -13 -13 + -3x = 13 Solving -13 + -3x = 13 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -3x = 13 + 13 Combine like terms: -13 + 13 = 0 0 + -3x = 13 + 13 -3x = 13 + 13 Combine like terms: 13 + 13 = 26 -3x = 26 Divide each side by '-3'. x = -8.666666667 Simplifying x = -8.666666667
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