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Simplifying 8r + 4 = 20r + 8 Reorder the terms: 4 + 8r = 20r + 8 Reorder the terms: 4 + 8r = 8 + 20r Solving 4 + 8r = 8 + 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 + 8r + -20r = 8 + 20r + -20r Combine like terms: 8r + -20r = -12r 4 + -12r = 8 + 20r + -20r Combine like terms: 20r + -20r = 0 4 + -12r = 8 + 0 4 + -12r = 8 Add '-4' to each side of the equation. 4 + -4 + -12r = 8 + -4 Combine like terms: 4 + -4 = 0 0 + -12r = 8 + -4 -12r = 8 + -4 Combine like terms: 8 + -4 = 4 -12r = 4 Divide each side by '-12'. r = -0.3333333333 Simplifying r = -0.3333333333
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