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Simplifying 7(r + 2) = 4(-1r) Reorder the terms: 7(2 + r) = 4(-1r) (2 * 7 + r * 7) = 4(-1r) (14 + 7r) = 4(-1r) Remove parenthesis around (-1r) 14 + 7r = 4 * -1r Multiply 4 * -1 14 + 7r = -4r Solving 14 + 7r = -4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4r' to each side of the equation. 14 + 7r + 4r = -4r + 4r Combine like terms: 7r + 4r = 11r 14 + 11r = -4r + 4r Combine like terms: -4r + 4r = 0 14 + 11r = 0 Add '-14' to each side of the equation. 14 + -14 + 11r = 0 + -14 Combine like terms: 14 + -14 = 0 0 + 11r = 0 + -14 11r = 0 + -14 Combine like terms: 0 + -14 = -14 11r = -14 Divide each side by '11'. r = -1.272727273 Simplifying r = -1.272727273
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