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Simplifying 5 + -2r = -2(r + 18) + 20 Reorder the terms: 5 + -2r = -2(18 + r) + 20 5 + -2r = (18 * -2 + r * -2) + 20 5 + -2r = (-36 + -2r) + 20 Reorder the terms: 5 + -2r = -36 + 20 + -2r Combine like terms: -36 + 20 = -16 5 + -2r = -16 + -2r Add '2r' to each side of the equation. 5 + -2r + 2r = -16 + -2r + 2r Combine like terms: -2r + 2r = 0 5 + 0 = -16 + -2r + 2r 5 = -16 + -2r + 2r Combine like terms: -2r + 2r = 0 5 = -16 + 0 5 = -16 Solving 5 = -16 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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