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Simplifying x + (x + -30) = 3x Reorder the terms: x + (-30 + x) = 3x Remove parenthesis around (-30 + x) x + -30 + x = 3x Reorder the terms: -30 + x + x = 3x Combine like terms: x + x = 2x -30 + 2x = 3x Solving -30 + 2x = 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -30 + 2x + -3x = 3x + -3x Combine like terms: 2x + -3x = -1x -30 + -1x = 3x + -3x Combine like terms: 3x + -3x = 0 -30 + -1x = 0 Add '30' to each side of the equation. -30 + 30 + -1x = 0 + 30 Combine like terms: -30 + 30 = 0 0 + -1x = 0 + 30 -1x = 0 + 30 Combine like terms: 0 + 30 = 30 -1x = 30 Divide each side by '-1'. x = -30 Simplifying x = -30
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