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Simplifying 2x + 2(2x) = 84 + x Remove parenthesis around (2x) 2x + 2 * 2x = 84 + x Multiply 2 * 2 2x + 4x = 84 + x Combine like terms: 2x + 4x = 6x 6x = 84 + x Solving 6x = 84 + 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. 6x + -1x = 84 + x + -1x Combine like terms: 6x + -1x = 5x 5x = 84 + x + -1x Combine like terms: x + -1x = 0 5x = 84 + 0 5x = 84 Divide each side by '5'. x = 16.8 Simplifying x = 16.8
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