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Simplifying 7(2.03 + 6r) = 2.09 (2.03 * 7 + 6r * 7) = 2.09 (14.21 + 42r) = 2.09 Solving 14.21 + 42r = 2.09 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-14.21' to each side of the equation. 14.21 + -14.21 + 42r = 2.09 + -14.21 Combine like terms: 14.21 + -14.21 = 0.00 0.00 + 42r = 2.09 + -14.21 42r = 2.09 + -14.21 Combine like terms: 2.09 + -14.21 = -12.12 42r = -12.12 Divide each side by '42'. r = -0.2885714286 Simplifying r = -0.2885714286
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