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Simplifying 5x + -3 = 81 + -2x Reorder the terms: -3 + 5x = 81 + -2x Solving -3 + 5x = 81 + -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. -3 + 5x + 2x = 81 + -2x + 2x Combine like terms: 5x + 2x = 7x -3 + 7x = 81 + -2x + 2x Combine like terms: -2x + 2x = 0 -3 + 7x = 81 + 0 -3 + 7x = 81 Add '3' to each side of the equation. -3 + 3 + 7x = 81 + 3 Combine like terms: -3 + 3 = 0 0 + 7x = 81 + 3 7x = 81 + 3 Combine like terms: 81 + 3 = 84 7x = 84 Divide each side by '7'. x = 12 Simplifying x = 12
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