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Simplifying 30 + -1x = -3x Solving 30 + -1x = -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 + -1x + 3x = -3x + 3x Combine like terms: -1x + 3x = 2x 30 + 2x = -3x + 3x Combine like terms: -3x + 3x = 0 30 + 2x = 0 Add '-30' to each side of the equation. 30 + -30 + 2x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + 2x = 0 + -30 2x = 0 + -30 Combine like terms: 0 + -30 = -30 2x = -30 Divide each side by '2'. x = -15 Simplifying x = -15
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