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Simplifying -4r = -8(r + -2) Reorder the terms: -4r = -8(-2 + r) -4r = (-2 * -8 + r * -8) -4r = (16 + -8r) Solving -4r = 16 + -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. -4r + 8r = 16 + -8r + 8r Combine like terms: -4r + 8r = 4r 4r = 16 + -8r + 8r Combine like terms: -8r + 8r = 0 4r = 16 + 0 4r = 16 Divide each side by '4'. r = 4 Simplifying r = 4
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