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Simplifying 7x + 2(x + 2) = 20 + -1(2x + -5) Reorder the terms: 7x + 2(2 + x) = 20 + -1(2x + -5) 7x + (2 * 2 + x * 2) = 20 + -1(2x + -5) 7x + (4 + 2x) = 20 + -1(2x + -5) Reorder the terms: 4 + 7x + 2x = 20 + -1(2x + -5) Combine like terms: 7x + 2x = 9x 4 + 9x = 20 + -1(2x + -5) Reorder the terms: 4 + 9x = 20 + -1(-5 + 2x) 4 + 9x = 20 + (-5 * -1 + 2x * -1) 4 + 9x = 20 + (5 + -2x) Combine like terms: 20 + 5 = 25 4 + 9x = 25 + -2x Solving 4 + 9x = 25 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. 4 + 9x + 2x = 25 + -2x + 2x Combine like terms: 9x + 2x = 11x 4 + 11x = 25 + -2x + 2x Combine like terms: -2x + 2x = 0 4 + 11x = 25 + 0 4 + 11x = 25 Add '-4' to each side of the equation. 4 + -4 + 11x = 25 + -4 Combine like terms: 4 + -4 = 0 0 + 11x = 25 + -4 11x = 25 + -4 Combine like terms: 25 + -4 = 21 11x = 21 Divide each side by '11'. x = 1.909090909 Simplifying x = 1.909090909
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