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Simplifying 21x + 164 = -241 + 12x Reorder the terms: 164 + 21x = -241 + 12x Solving 164 + 21x = -241 + 12x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12x' to each side of the equation. 164 + 21x + -12x = -241 + 12x + -12x Combine like terms: 21x + -12x = 9x 164 + 9x = -241 + 12x + -12x Combine like terms: 12x + -12x = 0 164 + 9x = -241 + 0 164 + 9x = -241 Add '-164' to each side of the equation. 164 + -164 + 9x = -241 + -164 Combine like terms: 164 + -164 = 0 0 + 9x = -241 + -164 9x = -241 + -164 Combine like terms: -241 + -164 = -405 9x = -405 Divide each side by '9'. x = -45 Simplifying x = -45
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