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Simplifying 7(18 + -1x) + 2x = 39 (18 * 7 + -1x * 7) + 2x = 39 (126 + -7x) + 2x = 39 Combine like terms: -7x + 2x = -5x 126 + -5x = 39 Solving 126 + -5x = 39 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-126' to each side of the equation. 126 + -126 + -5x = 39 + -126 Combine like terms: 126 + -126 = 0 0 + -5x = 39 + -126 -5x = 39 + -126 Combine like terms: 39 + -126 = -87 -5x = -87 Divide each side by '-5'. x = 17.4 Simplifying x = 17.4
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