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Simplifying 7 + 5r + -2 = 9r + 45 + -4r Reorder the terms: 7 + -2 + 5r = 9r + 45 + -4r Combine like terms: 7 + -2 = 5 5 + 5r = 9r + 45 + -4r Reorder the terms: 5 + 5r = 45 + 9r + -4r Combine like terms: 9r + -4r = 5r 5 + 5r = 45 + 5r Add '-5r' to each side of the equation. 5 + 5r + -5r = 45 + 5r + -5r Combine like terms: 5r + -5r = 0 5 + 0 = 45 + 5r + -5r 5 = 45 + 5r + -5r Combine like terms: 5r + -5r = 0 5 = 45 + 0 5 = 45 Solving 5 = 45 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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