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Simplifying -5r + 15 = 5(r + -2) Reorder the terms: 15 + -5r = 5(r + -2) Reorder the terms: 15 + -5r = 5(-2 + r) 15 + -5r = (-2 * 5 + r * 5) 15 + -5r = (-10 + 5r) Solving 15 + -5r = -10 + 5r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-5r' to each side of the equation. 15 + -5r + -5r = -10 + 5r + -5r Combine like terms: -5r + -5r = -10r 15 + -10r = -10 + 5r + -5r Combine like terms: 5r + -5r = 0 15 + -10r = -10 + 0 15 + -10r = -10 Add '-15' to each side of the equation. 15 + -15 + -10r = -10 + -15 Combine like terms: 15 + -15 = 0 0 + -10r = -10 + -15 -10r = -10 + -15 Combine like terms: -10 + -15 = -25 -10r = -25 Divide each side by '-10'. r = 2.5 Simplifying r = 2.5
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