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Simplifying 8x + 21 = 2x + 189 Reorder the terms: 21 + 8x = 2x + 189 Reorder the terms: 21 + 8x = 189 + 2x Solving 21 + 8x = 189 + 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. 21 + 8x + -2x = 189 + 2x + -2x Combine like terms: 8x + -2x = 6x 21 + 6x = 189 + 2x + -2x Combine like terms: 2x + -2x = 0 21 + 6x = 189 + 0 21 + 6x = 189 Add '-21' to each side of the equation. 21 + -21 + 6x = 189 + -21 Combine like terms: 21 + -21 = 0 0 + 6x = 189 + -21 6x = 189 + -21 Combine like terms: 189 + -21 = 168 6x = 168 Divide each side by '6'. x = 28 Simplifying x = 28
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