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Simplifying 2x + x + 1 = 90 Reorder the terms: 1 + 2x + x = 90 Combine like terms: 2x + x = 3x 1 + 3x = 90 Solving 1 + 3x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 3x = 90 + -1 Combine like terms: 1 + -1 = 0 0 + 3x = 90 + -1 3x = 90 + -1 Combine like terms: 90 + -1 = 89 3x = 89 Divide each side by '3'. x = 29.66666667 Simplifying x = 29.66666667
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