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Simplifying 3r + 4 = 19 + -2r Reorder the terms: 4 + 3r = 19 + -2r Solving 4 + 3r = 19 + -2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '2r' to each side of the equation. 4 + 3r + 2r = 19 + -2r + 2r Combine like terms: 3r + 2r = 5r 4 + 5r = 19 + -2r + 2r Combine like terms: -2r + 2r = 0 4 + 5r = 19 + 0 4 + 5r = 19 Add '-4' to each side of the equation. 4 + -4 + 5r = 19 + -4 Combine like terms: 4 + -4 = 0 0 + 5r = 19 + -4 5r = 19 + -4 Combine like terms: 19 + -4 = 15 5r = 15 Divide each side by '5'. r = 3 Simplifying r = 3
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