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Simplifying 7x + 42 = 3x + 18 Reorder the terms: 42 + 7x = 3x + 18 Reorder the terms: 42 + 7x = 18 + 3x Solving 42 + 7x = 18 + 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. 42 + 7x + -3x = 18 + 3x + -3x Combine like terms: 7x + -3x = 4x 42 + 4x = 18 + 3x + -3x Combine like terms: 3x + -3x = 0 42 + 4x = 18 + 0 42 + 4x = 18 Add '-42' to each side of the equation. 42 + -42 + 4x = 18 + -42 Combine like terms: 42 + -42 = 0 0 + 4x = 18 + -42 4x = 18 + -42 Combine like terms: 18 + -42 = -24 4x = -24 Divide each side by '4'. x = -6 Simplifying x = -6
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