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Simplifying 126 = 2x + 2(2x + -6) Reorder the terms: 126 = 2x + 2(-6 + 2x) 126 = 2x + (-6 * 2 + 2x * 2) 126 = 2x + (-12 + 4x) Reorder the terms: 126 = -12 + 2x + 4x Combine like terms: 2x + 4x = 6x 126 = -12 + 6x Solving 126 = -12 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. 126 + -6x = -12 + 6x + -6x Combine like terms: 6x + -6x = 0 126 + -6x = -12 + 0 126 + -6x = -12 Add '-126' to each side of the equation. 126 + -126 + -6x = -12 + -126 Combine like terms: 126 + -126 = 0 0 + -6x = -12 + -126 -6x = -12 + -126 Combine like terms: -12 + -126 = -138 -6x = -138 Divide each side by '-6'. x = 23 Simplifying x = 23
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