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Simplifying 12r + -3 = 8r + 5 Reorder the terms: -3 + 12r = 8r + 5 Reorder the terms: -3 + 12r = 5 + 8r Solving -3 + 12r = 5 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. -3 + 12r + -8r = 5 + 8r + -8r Combine like terms: 12r + -8r = 4r -3 + 4r = 5 + 8r + -8r Combine like terms: 8r + -8r = 0 -3 + 4r = 5 + 0 -3 + 4r = 5 Add '3' to each side of the equation. -3 + 3 + 4r = 5 + 3 Combine like terms: -3 + 3 = 0 0 + 4r = 5 + 3 4r = 5 + 3 Combine like terms: 5 + 3 = 8 4r = 8 Divide each side by '4'. r = 2 Simplifying r = 2
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