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Simplifying 39 = 7(x + 7) + -2x Reorder the terms: 39 = 7(7 + x) + -2x 39 = (7 * 7 + x * 7) + -2x 39 = (49 + 7x) + -2x Combine like terms: 7x + -2x = 5x 39 = 49 + 5x Solving 39 = 49 + 5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x' to each side of the equation. 39 + -5x = 49 + 5x + -5x Combine like terms: 5x + -5x = 0 39 + -5x = 49 + 0 39 + -5x = 49 Add '-39' to each side of the equation. 39 + -39 + -5x = 49 + -39 Combine like terms: 39 + -39 = 0 0 + -5x = 49 + -39 -5x = 49 + -39 Combine like terms: 49 + -39 = 10 -5x = 10 Divide each side by '-5'. x = -2 Simplifying x = -2
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