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Simplifying (4x + 4) = 90 Reorder the terms: (4 + 4x) = 90 Remove parenthesis around (4 + 4x) 4 + 4x = 90 Solving 4 + 4x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 4x = 90 + -4 Combine like terms: 4 + -4 = 0 0 + 4x = 90 + -4 4x = 90 + -4 Combine like terms: 90 + -4 = 86 4x = 86 Divide each side by '4'. x = 21.5 Simplifying x = 21.5
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