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Simplifying (7x + 20) + 146 = 90 Reorder the terms: (20 + 7x) + 146 = 90 Remove parenthesis around (20 + 7x) 20 + 7x + 146 = 90 Reorder the terms: 20 + 146 + 7x = 90 Combine like terms: 20 + 146 = 166 166 + 7x = 90 Solving 166 + 7x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-166' to each side of the equation. 166 + -166 + 7x = 90 + -166 Combine like terms: 166 + -166 = 0 0 + 7x = 90 + -166 7x = 90 + -166 Combine like terms: 90 + -166 = -76 7x = -76 Divide each side by '7'. x = -10.85714286 Simplifying x = -10.85714286
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