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Simplifying (x + -30) = (3x + -130) Reorder the terms: (-30 + x) = (3x + -130) Remove parenthesis around (-30 + x) -30 + x = (3x + -130) Reorder the terms: -30 + x = (-130 + 3x) Remove parenthesis around (-130 + 3x) -30 + x = -130 + 3x Solving -30 + x = -130 + 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 + x + -3x = -130 + 3x + -3x Combine like terms: x + -3x = -2x -30 + -2x = -130 + 3x + -3x Combine like terms: 3x + -3x = 0 -30 + -2x = -130 + 0 -30 + -2x = -130 Add '30' to each side of the equation. -30 + 30 + -2x = -130 + 30 Combine like terms: -30 + 30 = 0 0 + -2x = -130 + 30 -2x = -130 + 30 Combine like terms: -130 + 30 = -100 -2x = -100 Divide each side by '-2'. x = 50 Simplifying x = 50
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