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Simplifying 7x + 66 = 3x + 30 Reorder the terms: 66 + 7x = 3x + 30 Reorder the terms: 66 + 7x = 30 + 3x Solving 66 + 7x = 30 + 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. 66 + 7x + -3x = 30 + 3x + -3x Combine like terms: 7x + -3x = 4x 66 + 4x = 30 + 3x + -3x Combine like terms: 3x + -3x = 0 66 + 4x = 30 + 0 66 + 4x = 30 Add '-66' to each side of the equation. 66 + -66 + 4x = 30 + -66 Combine like terms: 66 + -66 = 0 0 + 4x = 30 + -66 4x = 30 + -66 Combine like terms: 30 + -66 = -36 4x = -36 Divide each side by '4'. x = -9 Simplifying x = -9
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