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Simplifying -2(7r + -1) = 2 + 3r Reorder the terms: -2(-1 + 7r) = 2 + 3r (-1 * -2 + 7r * -2) = 2 + 3r (2 + -14r) = 2 + 3r Add '-2' to each side of the equation. 2 + -2 + -14r = 2 + -2 + 3r Combine like terms: 2 + -2 = 0 0 + -14r = 2 + -2 + 3r -14r = 2 + -2 + 3r Combine like terms: 2 + -2 = 0 -14r = 0 + 3r -14r = 3r Solving -14r = 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. -14r + -3r = 3r + -3r Combine like terms: -14r + -3r = -17r -17r = 3r + -3r Combine like terms: 3r + -3r = 0 -17r = 0 Divide each side by '-17'. r = 0 Simplifying r = 0
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