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Simplifying 7x + 12 = 30 + -2x Reorder the terms: 12 + 7x = 30 + -2x Solving 12 + 7x = 30 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. 12 + 7x + 2x = 30 + -2x + 2x Combine like terms: 7x + 2x = 9x 12 + 9x = 30 + -2x + 2x Combine like terms: -2x + 2x = 0 12 + 9x = 30 + 0 12 + 9x = 30 Add '-12' to each side of the equation. 12 + -12 + 9x = 30 + -12 Combine like terms: 12 + -12 = 0 0 + 9x = 30 + -12 9x = 30 + -12 Combine like terms: 30 + -12 = 18 9x = 18 Divide each side by '9'. x = 2 Simplifying x = 2
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