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Simplifying 30 + -7x = -12x Solving 30 + -7x = -12x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12x' to each side of the equation. 30 + -7x + 12x = -12x + 12x Combine like terms: -7x + 12x = 5x 30 + 5x = -12x + 12x Combine like terms: -12x + 12x = 0 30 + 5x = 0 Add '-30' to each side of the equation. 30 + -30 + 5x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + 5x = 0 + -30 5x = 0 + -30 Combine like terms: 0 + -30 = -30 5x = -30 Divide each side by '5'. x = -6 Simplifying x = -6
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