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Simplifying -19r + 3r + -40 = 0 Reorder the terms: -40 + -19r + 3r = 0 Combine like terms: -19r + 3r = -16r -40 + -16r = 0 Solving -40 + -16r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + -16r = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -16r = 0 + 40 -16r = 0 + 40 Combine like terms: 0 + 40 = 40 -16r = 40 Divide each side by '-16'. r = -2.5 Simplifying r = -2.5
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