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Simplifying -4 = 20r Solving -4 = 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. -4 + -20r = 20r + -20r Combine like terms: 20r + -20r = 0 -4 + -20r = 0 Add '4' to each side of the equation. -4 + 4 + -20r = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -20r = 0 + 4 -20r = 0 + 4 Combine like terms: 0 + 4 = 4 -20r = 4 Divide each side by '-20'. r = -0.2 Simplifying r = -0.2
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