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Simplifying 3(r + -1) = 3 Reorder the terms: 3(-1 + r) = 3 (-1 * 3 + r * 3) = 3 (-3 + 3r) = 3 Solving -3 + 3r = 3 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 + 3r = 3 + 3 Combine like terms: -3 + 3 = 0 0 + 3r = 3 + 3 3r = 3 + 3 Combine like terms: 3 + 3 = 6 3r = 6 Divide each side by '3'. r = 2 Simplifying r = 2
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