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Simplifying 20x + -90 = 2x Reorder the terms: -90 + 20x = 2x Solving -90 + 20x = 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -90 + 20x + -2x = 2x + -2x Combine like terms: 20x + -2x = 18x -90 + 18x = 2x + -2x Combine like terms: 2x + -2x = 0 -90 + 18x = 0 Add '90' to each side of the equation. -90 + 90 + 18x = 0 + 90 Combine like terms: -90 + 90 = 0 0 + 18x = 0 + 90 18x = 0 + 90 Combine like terms: 0 + 90 = 90 18x = 90 Divide each side by '18'. x = 5 Simplifying x = 5
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