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Simplifying 64 = 9r Solving 64 = 9r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-9r' to each side of the equation. 64 + -9r = 9r + -9r Combine like terms: 9r + -9r = 0 64 + -9r = 0 Add '-64' to each side of the equation. 64 + -64 + -9r = 0 + -64 Combine like terms: 64 + -64 = 0 0 + -9r = 0 + -64 -9r = 0 + -64 Combine like terms: 0 + -64 = -64 -9r = -64 Divide each side by '-9'. r = 7.111111111 Simplifying r = 7.111111111
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