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Simplifying 9r + -4 = 50 Reorder the terms: -4 + 9r = 50 Solving -4 + 9r = 50 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 9r = 50 + 4 Combine like terms: -4 + 4 = 0 0 + 9r = 50 + 4 9r = 50 + 4 Combine like terms: 50 + 4 = 54 9r = 54 Divide each side by '9'. r = 6 Simplifying r = 6
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