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Simplifying -5(r + -4) = -2(4) Reorder the terms: -5(-4 + r) = -2(4) (-4 * -5 + r * -5) = -2(4) (20 + -5r) = -2(4) Multiply -2 * 4 20 + -5r = -8 Solving 20 + -5r = -8 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -5r = -8 + -20 Combine like terms: 20 + -20 = 0 0 + -5r = -8 + -20 -5r = -8 + -20 Combine like terms: -8 + -20 = -28 -5r = -28 Divide each side by '-5'. r = 5.6 Simplifying r = 5.6
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