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Simplifying 40 = 8r Solving 40 = 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. 40 + -8r = 8r + -8r Combine like terms: 8r + -8r = 0 40 + -8r = 0 Add '-40' to each side of the equation. 40 + -40 + -8r = 0 + -40 Combine like terms: 40 + -40 = 0 0 + -8r = 0 + -40 -8r = 0 + -40 Combine like terms: 0 + -40 = -40 -8r = -40 Divide each side by '-8'. r = 5 Simplifying r = 5
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