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Simplifying -45 = 3r Solving -45 = 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. -45 + -3r = 3r + -3r Combine like terms: 3r + -3r = 0 -45 + -3r = 0 Add '45' to each side of the equation. -45 + 45 + -3r = 0 + 45 Combine like terms: -45 + 45 = 0 0 + -3r = 0 + 45 -3r = 0 + 45 Combine like terms: 0 + 45 = 45 -3r = 45 Divide each side by '-3'. r = -15 Simplifying r = -15
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