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Simplifying -1(7r + 11) = -11(1 + -2r) Reorder the terms: -1(11 + 7r) = -11(1 + -2r) (11 * -1 + 7r * -1) = -11(1 + -2r) (-11 + -7r) = -11(1 + -2r) -11 + -7r = (1 * -11 + -2r * -11) -11 + -7r = (-11 + 22r) Add '11' to each side of the equation. -11 + 11 + -7r = -11 + 11 + 22r Combine like terms: -11 + 11 = 0 0 + -7r = -11 + 11 + 22r -7r = -11 + 11 + 22r Combine like terms: -11 + 11 = 0 -7r = 0 + 22r -7r = 22r Solving -7r = 22r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-22r' to each side of the equation. -7r + -22r = 22r + -22r Combine like terms: -7r + -22r = -29r -29r = 22r + -22r Combine like terms: 22r + -22r = 0 -29r = 0 Divide each side by '-29'. r = 0 Simplifying r = 0
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