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Simplifying 3r + 8r + -3.88 = 1.78 Reorder the terms: -3.88 + 3r + 8r = 1.78 Combine like terms: 3r + 8r = 11r -3.88 + 11r = 1.78 Solving -3.88 + 11r = 1.78 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3.88' to each side of the equation. -3.88 + 3.88 + 11r = 1.78 + 3.88 Combine like terms: -3.88 + 3.88 = 0.00 0.00 + 11r = 1.78 + 3.88 11r = 1.78 + 3.88 Combine like terms: 1.78 + 3.88 = 5.66 11r = 5.66 Divide each side by '11'. r = 0.5145454545 Simplifying r = 0.5145454545
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