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Simplifying 7x + -21 = 8x + 2 Reorder the terms: -21 + 7x = 8x + 2 Reorder the terms: -21 + 7x = 2 + 8x Solving -21 + 7x = 2 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. -21 + 7x + -8x = 2 + 8x + -8x Combine like terms: 7x + -8x = -1x -21 + -1x = 2 + 8x + -8x Combine like terms: 8x + -8x = 0 -21 + -1x = 2 + 0 -21 + -1x = 2 Add '21' to each side of the equation. -21 + 21 + -1x = 2 + 21 Combine like terms: -21 + 21 = 0 0 + -1x = 2 + 21 -1x = 2 + 21 Combine like terms: 2 + 21 = 23 -1x = 23 Divide each side by '-1'. x = -23 Simplifying x = -23
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