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Simplifying 3 = 23 + -4r Solving 3 = 23 + -4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4r' to each side of the equation. 3 + 4r = 23 + -4r + 4r Combine like terms: -4r + 4r = 0 3 + 4r = 23 + 0 3 + 4r = 23 Add '-3' to each side of the equation. 3 + -3 + 4r = 23 + -3 Combine like terms: 3 + -3 = 0 0 + 4r = 23 + -3 4r = 23 + -3 Combine like terms: 23 + -3 = 20 4r = 20 Divide each side by '4'. r = 5 Simplifying r = 5
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