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Simplifying 2x + -135 = 126 + -7x Reorder the terms: -135 + 2x = 126 + -7x Solving -135 + 2x = 126 + -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. -135 + 2x + 7x = 126 + -7x + 7x Combine like terms: 2x + 7x = 9x -135 + 9x = 126 + -7x + 7x Combine like terms: -7x + 7x = 0 -135 + 9x = 126 + 0 -135 + 9x = 126 Add '135' to each side of the equation. -135 + 135 + 9x = 126 + 135 Combine like terms: -135 + 135 = 0 0 + 9x = 126 + 135 9x = 126 + 135 Combine like terms: 126 + 135 = 261 9x = 261 Divide each side by '9'. x = 29 Simplifying x = 29
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