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Simplifying 13 = 3 + 5x + -2 + -2(x + 5) Reorder the terms: 13 = 3 + 5x + -2 + -2(5 + x) 13 = 3 + 5x + -2 + (5 * -2 + x * -2) 13 = 3 + 5x + -2 + (-10 + -2x) Reorder the terms: 13 = 3 + -2 + -10 + 5x + -2x Combine like terms: 3 + -2 = 1 13 = 1 + -10 + 5x + -2x Combine like terms: 1 + -10 = -9 13 = -9 + 5x + -2x Combine like terms: 5x + -2x = 3x 13 = -9 + 3x Solving 13 = -9 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 13 + -3x = -9 + 3x + -3x Combine like terms: 3x + -3x = 0 13 + -3x = -9 + 0 13 + -3x = -9 Add '-13' to each side of the equation. 13 + -13 + -3x = -9 + -13 Combine like terms: 13 + -13 = 0 0 + -3x = -9 + -13 -3x = -9 + -13 Combine like terms: -9 + -13 = -22 -3x = -22 Divide each side by '-3'. x = 7.333333333 Simplifying x = 7.333333333
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