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Simplifying -5(4r + 7) = 0 Reorder the terms: -5(7 + 4r) = 0 (7 * -5 + 4r * -5) = 0 (-35 + -20r) = 0 Solving -35 + -20r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '35' to each side of the equation. -35 + 35 + -20r = 0 + 35 Combine like terms: -35 + 35 = 0 0 + -20r = 0 + 35 -20r = 0 + 35 Combine like terms: 0 + 35 = 35 -20r = 35 Divide each side by '-20'. r = -1.75 Simplifying r = -1.75
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