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