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Simplifying (x + 5) + -2(x + 2) = 20 Reorder the terms: (5 + x) + -2(x + 2) = 20 Remove parenthesis around (5 + x) 5 + x + -2(x + 2) = 20 Reorder the terms: 5 + x + -2(2 + x) = 20 5 + x + (2 * -2 + x * -2) = 20 5 + x + (-4 + -2x) = 20 Reorder the terms: 5 + -4 + x + -2x = 20 Combine like terms: 5 + -4 = 1 1 + x + -2x = 20 Combine like terms: x + -2x = -1x 1 + -1x = 20 Solving 1 + -1x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 20 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 20 + -1 -1x = 20 + -1 Combine like terms: 20 + -1 = 19 -1x = 19 Divide each side by '-1'. x = -19 Simplifying x = -19
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