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Simplifying -161 = -7(8 + -3x) -161 = (8 * -7 + -3x * -7) -161 = (-56 + 21x) Solving -161 = -56 + 21x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21x' to each side of the equation. -161 + -21x = -56 + 21x + -21x Combine like terms: 21x + -21x = 0 -161 + -21x = -56 + 0 -161 + -21x = -56 Add '161' to each side of the equation. -161 + 161 + -21x = -56 + 161 Combine like terms: -161 + 161 = 0 0 + -21x = -56 + 161 -21x = -56 + 161 Combine like terms: -56 + 161 = 105 -21x = 105 Divide each side by '-21'. x = -5 Simplifying x = -5
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