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Simplifying -18 = -5(4r + -3) Reorder the terms: -18 = -5(-3 + 4r) -18 = (-3 * -5 + 4r * -5) -18 = (15 + -20r) Solving -18 = 15 + -20r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '20r' to each side of the equation. -18 + 20r = 15 + -20r + 20r Combine like terms: -20r + 20r = 0 -18 + 20r = 15 + 0 -18 + 20r = 15 Add '18' to each side of the equation. -18 + 18 + 20r = 15 + 18 Combine like terms: -18 + 18 = 0 0 + 20r = 15 + 18 20r = 15 + 18 Combine like terms: 15 + 18 = 33 20r = 33 Divide each side by '20'. r = 1.65 Simplifying r = 1.65
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