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Simplifying -2 = 4r + s Solving -2 = 4r + s 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. -2 + -4r = 4r + -4r + s Combine like terms: 4r + -4r = 0 -2 + -4r = 0 + s -2 + -4r = s Add '2' to each side of the equation. -2 + 2 + -4r = 2 + s Combine like terms: -2 + 2 = 0 0 + -4r = 2 + s -4r = 2 + s Divide each side by '-4'. r = -0.5 + -0.25s Simplifying r = -0.5 + -0.25s
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