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Simplifying 4(-1 + 2r) = 26 + 3r (-1 * 4 + 2r * 4) = 26 + 3r (-4 + 8r) = 26 + 3r Solving -4 + 8r = 26 + 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. -4 + 8r + -3r = 26 + 3r + -3r Combine like terms: 8r + -3r = 5r -4 + 5r = 26 + 3r + -3r Combine like terms: 3r + -3r = 0 -4 + 5r = 26 + 0 -4 + 5r = 26 Add '4' to each side of the equation. -4 + 4 + 5r = 26 + 4 Combine like terms: -4 + 4 = 0 0 + 5r = 26 + 4 5r = 26 + 4 Combine like terms: 26 + 4 = 30 5r = 30 Divide each side by '5'. r = 6 Simplifying r = 6
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