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Simplifying -4r + 5 = -4r Reorder the terms: 5 + -4r = -4r Add '4r' to each side of the equation. 5 + -4r + 4r = -4r + 4r Combine like terms: -4r + 4r = 0 5 + 0 = -4r + 4r 5 = -4r + 4r Combine like terms: -4r + 4r = 0 5 = 0 Solving 5 = 0 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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