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Simplifying 4r + -3 = 13 Reorder the terms: -3 + 4r = 13 Solving -3 + 4r = 13 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 4r = 13 + 3 Combine like terms: -3 + 3 = 0 0 + 4r = 13 + 3 4r = 13 + 3 Combine like terms: 13 + 3 = 16 4r = 16 Divide each side by '4'. r = 4 Simplifying r = 4
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