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Simplifying -9 + -5(1 + 2r) = -10r + -2 -9 + (1 * -5 + 2r * -5) = -10r + -2 -9 + (-5 + -10r) = -10r + -2 Combine like terms: -9 + -5 = -14 -14 + -10r = -10r + -2 Reorder the terms: -14 + -10r = -2 + -10r Add '10r' to each side of the equation. -14 + -10r + 10r = -2 + -10r + 10r Combine like terms: -10r + 10r = 0 -14 + 0 = -2 + -10r + 10r -14 = -2 + -10r + 10r Combine like terms: -10r + 10r = 0 -14 = -2 + 0 -14 = -2 Solving -14 = -2 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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