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Simplifying (x + 54) + (2x + -10) = 90 Reorder the terms: (54 + x) + (2x + -10) = 90 Remove parenthesis around (54 + x) 54 + x + (2x + -10) = 90 Reorder the terms: 54 + x + (-10 + 2x) = 90 Remove parenthesis around (-10 + 2x) 54 + x + -10 + 2x = 90 Reorder the terms: 54 + -10 + x + 2x = 90 Combine like terms: 54 + -10 = 44 44 + x + 2x = 90 Combine like terms: x + 2x = 3x 44 + 3x = 90 Solving 44 + 3x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-44' to each side of the equation. 44 + -44 + 3x = 90 + -44 Combine like terms: 44 + -44 = 0 0 + 3x = 90 + -44 3x = 90 + -44 Combine like terms: 90 + -44 = 46 3x = 46 Divide each side by '3'. x = 15.33333333 Simplifying x = 15.33333333
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