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Simplifying -1(-43 + (-78)) = (-78) -1(-43 + -78) = (-78) Combine like terms: -43 + -78 = -121 -1(-121) = (-78) Multiply -1 * -121 121 = (-78) 121 = -78 Solving 121 = -78 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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