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Simplifying 13 + (x + -13) + -1(2 + -5) = 2.8 Reorder the terms: 13 + (-13 + x) + -1(2 + -5) = 2.8 Remove parenthesis around (-13 + x) 13 + -13 + x + -1(2 + -5) = 2.8 Combine like terms: 2 + -5 = -3 13 + -13 + x + -1(-3) = 2.8 Multiply -1 * -3 13 + -13 + x + 3 = 2.8 Reorder the terms: 13 + -13 + 3 + x = 2.8 Combine like terms: 13 + -13 = 0 0 + 3 + x = 2.8 3 + x = 2.8 Solving 3 + x = 2.8 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 2.8 + -3 Combine like terms: 3 + -3 = 0 0 + x = 2.8 + -3 x = 2.8 + -3 Combine like terms: 2.8 + -3 = -0.2 x = -0.2 Simplifying x = -0.2
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