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Simplifying -3r + 9 + -2r = -12 + -5r Reorder the terms: 9 + -3r + -2r = -12 + -5r Combine like terms: -3r + -2r = -5r 9 + -5r = -12 + -5r Add '5r' to each side of the equation. 9 + -5r + 5r = -12 + -5r + 5r Combine like terms: -5r + 5r = 0 9 + 0 = -12 + -5r + 5r 9 = -12 + -5r + 5r Combine like terms: -5r + 5r = 0 9 = -12 + 0 9 = -12 Solving 9 = -12 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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