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Simplifying 21x + -30 = 29x + 30 Reorder the terms: -30 + 21x = 29x + 30 Reorder the terms: -30 + 21x = 30 + 29x Solving -30 + 21x = 30 + 29x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-29x' to each side of the equation. -30 + 21x + -29x = 30 + 29x + -29x Combine like terms: 21x + -29x = -8x -30 + -8x = 30 + 29x + -29x Combine like terms: 29x + -29x = 0 -30 + -8x = 30 + 0 -30 + -8x = 30 Add '30' to each side of the equation. -30 + 30 + -8x = 30 + 30 Combine like terms: -30 + 30 = 0 0 + -8x = 30 + 30 -8x = 30 + 30 Combine like terms: 30 + 30 = 60 -8x = 60 Divide each side by '-8'. x = -7.5 Simplifying x = -7.5
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