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Simplifying 90 + (7x + -6) = 180 Reorder the terms: 90 + (-6 + 7x) = 180 Remove parenthesis around (-6 + 7x) 90 + -6 + 7x = 180 Combine like terms: 90 + -6 = 84 84 + 7x = 180 Solving 84 + 7x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-84' to each side of the equation. 84 + -84 + 7x = 180 + -84 Combine like terms: 84 + -84 = 0 0 + 7x = 180 + -84 7x = 180 + -84 Combine like terms: 180 + -84 = 96 7x = 96 Divide each side by '7'. x = 13.71428571 Simplifying x = 13.71428571
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