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Simplifying -5 = -12 + 3r Solving -5 = -12 + 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. -5 + -3r = -12 + 3r + -3r Combine like terms: 3r + -3r = 0 -5 + -3r = -12 + 0 -5 + -3r = -12 Add '5' to each side of the equation. -5 + 5 + -3r = -12 + 5 Combine like terms: -5 + 5 = 0 0 + -3r = -12 + 5 -3r = -12 + 5 Combine like terms: -12 + 5 = -7 -3r = -7 Divide each side by '-3'. r = 2.333333333 Simplifying r = 2.333333333
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