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Simplifying 13x + 21 = 5x + 261 Reorder the terms: 21 + 13x = 5x + 261 Reorder the terms: 21 + 13x = 261 + 5x Solving 21 + 13x = 261 + 5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x' to each side of the equation. 21 + 13x + -5x = 261 + 5x + -5x Combine like terms: 13x + -5x = 8x 21 + 8x = 261 + 5x + -5x Combine like terms: 5x + -5x = 0 21 + 8x = 261 + 0 21 + 8x = 261 Add '-21' to each side of the equation. 21 + -21 + 8x = 261 + -21 Combine like terms: 21 + -21 = 0 0 + 8x = 261 + -21 8x = 261 + -21 Combine like terms: 261 + -21 = 240 8x = 240 Divide each side by '8'. x = 30 Simplifying x = 30
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