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Simplifying 2(-6r + -7) = 28 + 2r Reorder the terms: 2(-7 + -6r) = 28 + 2r (-7 * 2 + -6r * 2) = 28 + 2r (-14 + -12r) = 28 + 2r Solving -14 + -12r = 28 + 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. -14 + -12r + -2r = 28 + 2r + -2r Combine like terms: -12r + -2r = -14r -14 + -14r = 28 + 2r + -2r Combine like terms: 2r + -2r = 0 -14 + -14r = 28 + 0 -14 + -14r = 28 Add '14' to each side of the equation. -14 + 14 + -14r = 28 + 14 Combine like terms: -14 + 14 = 0 0 + -14r = 28 + 14 -14r = 28 + 14 Combine like terms: 28 + 14 = 42 -14r = 42 Divide each side by '-14'. r = -3 Simplifying r = -3
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