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Simplifying -4(r + 2) = 4(2 + -4) * r Reorder the terms: -4(2 + r) = 4(2 + -4) * r (2 * -4 + r * -4) = 4(2 + -4) * r (-8 + -4r) = 4(2 + -4) * r Combine like terms: 2 + -4 = -2 -8 + -4r = 4(-2) * r Multiply 4 * -2 -8 + -4r = -8r Solving -8 + -4r = -8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '8r' to each side of the equation. -8 + -4r + 8r = -8r + 8r Combine like terms: -4r + 8r = 4r -8 + 4r = -8r + 8r Combine like terms: -8r + 8r = 0 -8 + 4r = 0 Add '8' to each side of the equation. -8 + 8 + 4r = 0 + 8 Combine like terms: -8 + 8 = 0 0 + 4r = 0 + 8 4r = 0 + 8 Combine like terms: 0 + 8 = 8 4r = 8 Divide each side by '4'. r = 2 Simplifying r = 2
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