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Simplifying 3 + 9(-4 + r) = -9r + -2(5 + -9r) 3 + (-4 * 9 + r * 9) = -9r + -2(5 + -9r) 3 + (-36 + 9r) = -9r + -2(5 + -9r) Combine like terms: 3 + -36 = -33 -33 + 9r = -9r + -2(5 + -9r) -33 + 9r = -9r + (5 * -2 + -9r * -2) -33 + 9r = -9r + (-10 + 18r) Reorder the terms: -33 + 9r = -10 + -9r + 18r Combine like terms: -9r + 18r = 9r -33 + 9r = -10 + 9r Add '-9r' to each side of the equation. -33 + 9r + -9r = -10 + 9r + -9r Combine like terms: 9r + -9r = 0 -33 + 0 = -10 + 9r + -9r -33 = -10 + 9r + -9r Combine like terms: 9r + -9r = 0 -33 = -10 + 0 -33 = -10 Solving -33 = -10 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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