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Simplifying 7x + -8 = 21 + 5x Reorder the terms: -8 + 7x = 21 + 5x Solving -8 + 7x = 21 + 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. -8 + 7x + -5x = 21 + 5x + -5x Combine like terms: 7x + -5x = 2x -8 + 2x = 21 + 5x + -5x Combine like terms: 5x + -5x = 0 -8 + 2x = 21 + 0 -8 + 2x = 21 Add '8' to each side of the equation. -8 + 8 + 2x = 21 + 8 Combine like terms: -8 + 8 = 0 0 + 2x = 21 + 8 2x = 21 + 8 Combine like terms: 21 + 8 = 29 2x = 29 Divide each side by '2'. x = 14.5 Simplifying x = 14.5
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