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Simplifying 7x + 18 = x + 12 Reorder the terms: 18 + 7x = x + 12 Reorder the terms: 18 + 7x = 12 + x Solving 18 + 7x = 12 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 18 + 7x + -1x = 12 + x + -1x Combine like terms: 7x + -1x = 6x 18 + 6x = 12 + x + -1x Combine like terms: x + -1x = 0 18 + 6x = 12 + 0 18 + 6x = 12 Add '-18' to each side of the equation. 18 + -18 + 6x = 12 + -18 Combine like terms: 18 + -18 = 0 0 + 6x = 12 + -18 6x = 12 + -18 Combine like terms: 12 + -18 = -6 6x = -6 Divide each side by '6'. x = -1 Simplifying x = -1
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